[libcxx-commits] [libcxxabi] [libcxxabi] Update ItaniumDemangle.h from LLVM (PR #140273)

[Aiden Grossman via libcxx-commits]

boomanaiden154 wrote:

That was fixed in 71d1b4c77c39201b0d533c2eccb2f5cbc1561b22.

Here it's not just cleaning up an unneeded dependency. It's a layering violation to include from `llvm/Support` in `ItaniumDemangle.h`.

https://github.com/llvm/llvm-project/pull/140273