[libcxx-commits] [libcxx] [libc++] Slightly simplify max_size and add new tests for vector (PR #119990)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

This basically LGTM, but I'd like to see this again with the updated tests before merging. Thanks a lot for the fix!

https://github.com/llvm/llvm-project/pull/119990