[compiler-rt] [sanitizer_common] Suppress warning of cast from SignalHandlerType to sa_sigaction_t (PR #86046)

[Thurston Dang via llvm-commits]

thurstond wrote:

I reverted it in https://github.com/llvm/llvm-project/commit/0e3fbfd1e106dd027aab9ea4a9a6f116d05a0987 because it didn't actually suppress the warning

"Split -Wcast-function-type into a separate group" (by AaronBallman; https://github.com/llvm/llvm-project/pull/86131) will prevent the warning, though we should figure out a way to fix the cast in the longer term.

https://github.com/llvm/llvm-project/pull/86046