[clang] [clang-tools-extra] Reland: [clang] NFC: Clear some uses of MemberPointerType::getClass (PR #132317)

[Alexander Kornienko via cfe-commits]

alexfh wrote:

> > @alexfh Are you sure the original crashes were due to #132977 ?
> 
> I thought so, but your explanation below also seems reasonable. I can try to verify.
> 
> > Looking at the patch, it seems unlikely it could cause a crash in itself.
> > What I think happened is that your compilation proceeded further along and encountered the other crash, which was a regression introduced by a different commit, which had been reported even before that last commit was landed.
> > It's certainly possible to revert this commit, however there are a lot of dependent patches by this point, and I think this last crash is isolated enough to point into #132401 instead of this commit.

I can confirm (using the reduced test case) that the last crash is due to https://github.com/llvm/llvm-project/pull/132401, but it was hidden until #132977 was in the tree.

https://github.com/llvm/llvm-project/pull/132317