[compiler-rt] [llvm] Fix buildbot failure by fixing the base pointer type (PR #100508)

[Mingming Liu via llvm-commits]

minglotus-6 wrote:

I tried to reproduce it with https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild#try-local-changes and all test passed. Will consider it noise.

```
Testing Time: 564.86s

Total Discovered Tests: 107550
  Skipped          :     21 (0.02%)
  Unsupported      :   1782 (1.66%)
  Passed           : 105549 (98.14%)
  Expectedly Failed:    198 (0.18%)
+ [[ 1 != \1 ]]
+ cleanup
+ find -executable -type f -wholename '*unittests*' -delete
+ du -hs libcxx_build_asan_ubsan libcxx_build_msan llvm-project llvm-zorg llvm_build0 llvm_build_asan_ubsan llvm_build_msan
+ sort -h
11M	llvm-zorg
43M	libcxx_build_msan
66M	libcxx_build_asan_ubsan
3.4G	llvm-project
5.1G	llvm_build0
37G	llvm_build_msan
60G	llvm_build_asan_ubsan

```

https://github.com/llvm/llvm-project/pull/100508