[llvm] [llvm] terminate namespace with closing comment (PR #94917)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

@VoltrexKeyva it seems like you pushed a bunch of changes that shouldn't have ended up in this PR?

Also, please don't force push. It doesn't really matter in this case, but it breaks the location association for comments.

https://github.com/llvm/llvm-project/pull/94917