[clang] [Clang][Parser] Fix crash of clang when using C++ constructs like :: in C code (PR #74926)

[Timm Baeder via cfe-commits]

tbaederr wrote:

The build fails though, with this error:

``
tools/clang/docs/ReleaseNotes.rst:691:Unknown target name: "#73559 https://github.com/llvm/llvm-project/issues/73559"
``

https://github.com/llvm/llvm-project/pull/74926