[llvm] [BOLT] Fix conditional compilation of hugify.cpp (PR #135880)

[Maksim Panchenko via llvm-commits]

maksfb wrote:

> LGTM. Thanks for the fix.

No worries, Paul! I didn't verify the fix since I don't build on Mac, but that macro is the most likely cause.

https://github.com/llvm/llvm-project/pull/135880