[libc-commits] [libc] [libc] Replace `MutexLock` with `cpp::lock_guard` (PR #89340)

[Vlad Mishel via libc-commits]

vmishelcs wrote:

@nickdesaulniers Please take a look whenever you find time and let me know if I need to make any changes.

Also should I leave a comment in the new mutex.h as sort of a "bibliography" that I used the GCC implementation as inspiration?

Thanks for your time and your advice earlier on how to tackle this issue!

https://github.com/llvm/llvm-project/pull/89340