[clang] fix issue 73559. (PR #74926)

[Shafik Yaghmour via cfe-commits]

shafik wrote:

In the future please add a more description title to your PR. Your summary is great though.

Also in this case this is a clang and parser fix so you should prefix your title with `[Clang][Parser]`

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