[libc-commits] [libc] [libc][pthread] fix -Wmissing-field-initializers (PR #126314)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

Let me file an issue about our pthread_rwlock_t being linux specific, which has implications for the initializer.

https://github.com/llvm/llvm-project/pull/126314