[llvm-branch-commits] [clang] [HLSL][RootSignature] Audit `RootSignatureParser` diagnostic production (PR #147800)

[Deric C. via llvm-branch-commits]

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

Seems fine to me. Could use a second approval to make sure

https://github.com/llvm/llvm-project/pull/147800