[Clang] fix nested-name-specifier error recovery with ordinary lookup fallback results (#181828)

Fixes #181470

--- 

This patch addresses the regression caused by
f3dcec0ee73fee6a33fcfb422e04297e4d466de6. The assertion occurs when
nested-name-specifier error recovery tries to extend a nested name
specifier with a result found via ordinary lookup fallback


https://github.com/llvm/llvm-project/blob/75aa83c0c035a7a10f0f48355c93858f003b8e4e/clang/lib/Sema/SemaCXXScopeSpec.cpp#L725-L728

which can hit `getTypeDeclType` qualifier assertions


https://github.com/llvm/llvm-project/blob/75aa83c0c035a7a10f0f48355c93858f003b8e4e/clang/lib/Sema/SemaCXXScopeSpec.cpp#L420


https://github.com/llvm/llvm-project/blob/4f92cf9599c4077c08b7fac0a21624e55da572f9/clang/lib/AST/ASTContext.cpp#L5162-L5176
3 files changed
tree: c2004f41fa2e31d66b55a67bce5d589860c033ad
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. SECURITY.md
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