[clang] [Clang] Fix ICE in SemaOpenMP with structured binding (PR #104822)

[Krzysztof Parzyszek via cfe-commits]

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

LGTM.  We will complain when someone tries to capture a structure binding anyway.

https://github.com/llvm/llvm-project/pull/104822