[libcxx-commits] [libcxx] [libc++] Add MSVC's implementation of `exception_ptr` for Windows (PR #94977)

[Louis Dionne via libcxx-commits]

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

Minor comments, but LGTM. I didn't review the implementation (`exception_pointer_msvc.ipp`) in detail since that part is coming from MSVC itself.

https://github.com/llvm/llvm-project/pull/94977