[compiler-rt] [fuzzer] fix clang-cl build fuzzer lit test failure (PR #112339)

[via llvm-commits]

Zentrik wrote:

This broke building for me on x64 and i686 using mingw to build as a shared object. Logs at https://github.com/Zentrik/llvm_julia_tester/actions/runs/11392238393/job/31697854988#step:9:5200. Unfortunately, I'm not going to have time to look into this until next week, but I'll see if I can figure out what's going on then.

https://github.com/llvm/llvm-project/pull/112339