[clang] [Clang] handle invalid close location in static assert declaration (PR #108701)

[Oleksandr T. via cfe-commits]

a-tarasyuk wrote:

> So this looks like a regression: https://gcc.godbolt.org/z/h6GexT18E

@shafik https://gcc.godbolt.org/z/Ebvnjrc8e

https://github.com/llvm/llvm-project/pull/108701