[libcxx-commits] [libcxx] [libc++] refactor `cxx_atomic_wait` to make it reusable for atomic_ref (PR #81427)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

LGTM with comments. Thanks a lot, I think this is a pretty significant improvement in readability and it will unblock `atomic_ref`.

https://github.com/llvm/llvm-project/pull/81427