[compiler-rt] [llvm] [LLVM][compiler-rt] Fix build with LLVM_USE_SANITIZER=Undefined (PR #120006)

[Dmitry Chestnykh via llvm-commits]

chestnykh wrote:

UPD:
With clang as host compiler the following error is also presented:
```
CMake Error at /home/dima/work/llvm-project/compiler-rt/cmake/Modules/AddCompilerRT.cmake:466 (sanitizer_test_compile):
  Unknown CMake command "sanitizer_test_compile".
Call Stack (most recent call first):
  /home/dima/work/llvm-project/compiler-rt/lib/scudo/standalone/tests/CMakeLists.txt:76 (generate_compiler_rt_tests)
  /home/dima/work/llvm-project/compiler-rt/lib/scudo/standalone/tests/CMakeLists.txt:121 (add_scudo_unittest)
```

So the patch is needed

https://github.com/llvm/llvm-project/pull/120006