[clang] [Clang] Fix the for statement disappearing in AST when an error occurs in the conditional expression of the for statement (PR #65381)

[Shafik Yaghmour via cfe-commits]

https://github.com/shafik commented:

This looks good to me but I would like another set of eyes on it.

https://github.com/llvm/llvm-project/pull/65381