[clang] [clang] fix crash in friend definition (PR #186398)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

> @mizvekov i think nestednamespacespecifier enum doesn't contain namespacealias that's why it is triggering a lot yeah the namespace itself can cover it:/ @mizvekov think I need a bit of direction on this I am getting confused about the errors

Yeah namespace alias as a NNS kind doesn't exist anymore, it's all namespaces now. I should have known it because I changed that :)

Soon I'll be out of office for the next two weeks. Maybe try working on something else meanwhile, I'll try to help when I get back.


https://github.com/llvm/llvm-project/pull/186398