[libc-commits] [libc] [libc][signal] clean up usage of sighandler_t (PR #125745)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

Looks like `ag` and `rg` default ignore searching .h files unless `-uuu` is passed...good to know...

https://github.com/llvm/llvm-project/pull/125745