[clang] Diagnose misuse of the cleanup attribute (PR #80040)

[Bhuminjay Soni via cfe-commits]

11happy wrote:

> It looks like it passed on your last commit but you have a conflict now which you need to resolve.
> 
> Can you merge or do you need help with that?

I tried to resolve the merge conflict but the resolve editor is just stuck on loading on Vs Code may be as it have 2 conflicts?

https://github.com/llvm/llvm-project/pull/80040