[libc-commits] [libc] [libc] fix HashTable warnings and build problems (PR #74371)

[Schrodinger ZHU Yifan via libc-commits]

SchrodingerZhu wrote:

Please remember to use the updated PR description when merging this. Sometimes github don't automatically draw the updates into the default commit message.

https://github.com/llvm/llvm-project/pull/74371