[libc-commits] [libc] [libc] fix build errors (PR #95600)

[Schrodinger ZHU Yifan via libc-commits]

SchrodingerZhu wrote:

I am now merging this without waiting for ARM/RISCV build, since RwLock are not enabled on ARM(32) and RISC-V anyway.

https://github.com/llvm/llvm-project/pull/95600