[llvm] [llvm-mt] Use XmlDeleter to free xmlFreeDoc (PR #128472)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `openmp-offload-sles-build-only` running on `rocm-worker-hw-04-sles` while building `llvm` at step 5 "compile-openmp".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/140/builds/17604

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (compile-openmp) failure: build (failure)
...
                 from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/InstrInfoEmitter.cpp:15:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(const llvm::Record*) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1797:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses)
                            ^
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(llvm::StringRef) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1804:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses) {
                            ^
1.220 [6064/32/1005] Building CXX object lib/WindowsManifest/CMakeFiles/LLVMWindowsManifest.dir/WindowsManifestMerger.cpp.o
FAILED: lib/WindowsManifest/CMakeFiles/LLVMWindowsManifest.dir/WindowsManifestMerger.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/WindowsManifest -I/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/lib/WindowsManifest -Iinclude -I/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++1z -MD -MT lib/WindowsManifest/CMakeFiles/LLVMWindowsManifest.dir/WindowsManifestMerger.cpp.o -MF lib/WindowsManifest/CMakeFiles/LLVMWindowsManifest.dir/WindowsManifestMerger.cpp.o.d -o lib/WindowsManifest/CMakeFiles/LLVMWindowsManifest.dir/WindowsManifestMerger.cpp.o -c /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/lib/WindowsManifest/WindowsManifestMerger.cpp
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/lib/WindowsManifest/WindowsManifestMerger.cpp:679:78: error: definition of implicitly-declared ‘llvm::windows_manifest::WindowsManifestMerger::WindowsManifestMergerImpl::~WindowsManifestMergerImpl()’
 WindowsManifestMerger::WindowsManifestMergerImpl::~WindowsManifestMergerImpl() {
                                                                              ^
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/lib/WindowsManifest/WindowsManifestMerger.cpp:679:1: error: ‘class llvm::windows_manifest::WindowsManifestMerger::WindowsManifestMergerImpl’ is private within this context
 WindowsManifestMerger::WindowsManifestMergerImpl::~WindowsManifestMergerImpl() {
 ^~~~~~~~~~~~~~~~~~~~~
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/lib/WindowsManifest/WindowsManifestMerger.cpp:33:30: note: declared private here
 class WindowsManifestMerger::WindowsManifestMergerImpl {
                              ^~~~~~~~~~~~~~~~~~~~~~~~~
1.224 [6064/31/1006] Building CXX object utils/TableGen/CMakeFiles/llvm-tblgen.dir/GlobalISelEmitter.cpp.o
In file included from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/Common/CodeGenInstruction.h:20:0,
                 from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/Common/CodeGenTarget.h:22,
                 from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/Common/CodeGenDAGPatterns.h:19,
                 from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/GlobalISelEmitter.cpp:34:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(const llvm::Record*) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1797:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses)
                            ^
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(llvm::StringRef) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1804:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses) {
                            ^
1.225 [6064/30/1007] Building CXX object utils/TableGen/CMakeFiles/llvm-tblgen.dir/GlobalISelCombinerEmitter.cpp.o
In file included from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/Common/CodeGenInstruction.h:20:0,
                 from /home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/GlobalISelCombinerEmitter.cpp:30:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(const llvm::Record*) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1797:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses)
                            ^
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h: In member function ‘bool llvm::Record::isSubClassOf(llvm::StringRef) const’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/include/llvm/TableGen/Record.h:1804:28: warning: unused variable ‘_’ [-Wunused-variable]
     for (const auto &[SC, _] : SuperClasses) {
                            ^
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/GlobalISelCombinerEmitter.cpp: In member function ‘bool {anonymous}::CombineRuleBuilder::emitPatFragMatchPattern(llvm::CodeExpansions&, const PatternAlternatives&, llvm::gi::RuleMatcher&, llvm::gi::InstructionMatcher*, const llvm::gi::PatFragPattern&, llvm::DenseSet<const llvm::gi::Pattern*>&)’:
/home/botworker/bbot/builds/openmp-offload-sles-build/llvm.src/llvm/utils/TableGen/GlobalISelCombinerEmitter.cpp:1783:30: warning: unused variable ‘Idx’ [-Wunused-variable]
   for (const auto &[Idx, InOp] : enumerate(PF.out_params())) {
                              ^

```

</details>

https://github.com/llvm/llvm-project/pull/128472