[libcxx-commits] [libcxx] Revert "[libc++] Don't try to be compatible with libstdc++ in __libcpp_refstring on iOS (#170816)" (PR #173099)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 approved this pull request.

This is very unfortunate.

https://github.com/llvm/llvm-project/pull/173099