[libcxx-commits] [libcxx] [libcxx] renames `__split_buffer` alias template to `_SplitBuffer` (PR #180284)

[Christopher Di Bella via libcxx-commits]

cjdb wrote:

Thanks for letting me know you'd like the commit messages to be consistent. I'll make sure all existing PRs are reworded before pressing submit.

https://github.com/llvm/llvm-project/pull/180284