[libcxx-commits] [libcxx] Apply 'LWG3253 basic_syncbuf::basic_syncbuf() should not be explicit' (PR #101179)

[Mark de Wever via libcxx-commits]

mordante wrote:

I'm closing this since it's a duplicate of https://github.com/llvm/llvm-project/pull/99778, which has been approved.

https://github.com/llvm/llvm-project/pull/101179