[clang] [Clang][OpenMP] Bug fix Default clause variable category (PR #168846)

[CHANDRA GHALE via cfe-commits]

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

fix has been already reviewed from PR[165276]( https://github.com/llvm/llvm-project/pull/165276) . Testcase LGTM.

https://github.com/llvm/llvm-project/pull/168846