[libcxx-commits] [libcxx] [libc++] Fix constraints for `optional`'s constructors taking `in_place_t` and related `make_optional` overloads (PR #173467)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

@frederick-vs-ja Please wait for reviews on larger, and especially functional changes like this.

https://github.com/llvm/llvm-project/pull/173467