[compiler-rt] [compiler-rt] freadlink fix 2 for #83679. (PR #110372)

[Henrik G. Olsson via llvm-commits]

hnrklssn wrote:

freadlink.c test cases are failing on Darwin x86_64: https://green.lab.llvm.org/job/llvm.org/job/clang-stage1-cmake-RA-expensive/2122/testReport/
```
/Users/ec2-user/jenkins/workspace/llvm.org/clang-stage1-cmake-RA-expensive/clang-build/tools/clang/runtime/compiler-rt-bins/test/sanitizer_common/asan-x86_64-Darwin/Darwin/Output/freadlink.c.tmp
Assertion failed: (res2 >= 0), function main, file freadlink.c, line 23.
/Users/ec2-user/jenkins/workspace/llvm.org/clang-stage1-cmake-RA-expensive/clang-build/tools/clang/runtime/compiler-rt-bins/test/sanitizer_common/asan-x86_64-Darwin/Darwin/Output/freadlink.c.script: line 1: 26091 Abort trap: 6           /Users/ec2-user/jenkins/workspace/llvm.org/clang-stage1-cmake-RA-expensive/clang-build/tools/clang/runtime/compiler-rt-bins/test/sanitizer_common/asan-x86_64-Darwin/Darwin/Output/freadlink.c.tmp
```

Do you have a quick fix? Otherwise, would you please revert your changes?

https://github.com/llvm/llvm-project/pull/110372