[clang] [Clang][NFC] Rename UnqualPtrTy to DefaultPtrTy (PR #163207)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-m68k-linux-cross` running on `suse-gary-m68k-cross` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/27/builds/17768

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'LLVM :: ExecutionEngine/JITLink/x86-64/COFF_rel32_4_reloc.test' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/bin/yaml2obj /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_rel32_4_reloc.test -o /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/test/ExecutionEngine/JITLink/x86-64/Output/COFF_rel32_4_reloc.test.tmp
# executed command: /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/bin/yaml2obj /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_rel32_4_reloc.test -o /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/test/ExecutionEngine/JITLink/x86-64/Output/COFF_rel32_4_reloc.test.tmp
# RUN: at line 2
/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/bin/llvm-jitlink -noexec -check /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_rel32_4_reloc.test /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/test/ExecutionEngine/JITLink/x86-64/Output/COFF_rel32_4_reloc.test.tmp
# executed command: /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/bin/llvm-jitlink -noexec -check /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/test/ExecutionEngine/JITLink/x86-64/COFF_rel32_4_reloc.test /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/test/ExecutionEngine/JITLink/x86-64/Output/COFF_rel32_4_reloc.test.tmp
# .---command stderr------------
# | llvm-jitlink error: Cannot allocate memory
# `-----------------------------
# error: command failed with exit status: 1

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/163207