[clang] [clang][analyzer] Fix crash caused by overload operator member function with explicit this (PR #132581)

[Balazs Benics via cfe-commits]

https://github.com/steakhal approved this pull request.

I have not much to say. It's an alpha checker, that is known for crashing.
One less crash wouldn't change the situation by much but would certainly push the needle to the right direction.

https://github.com/llvm/llvm-project/pull/132581