[clang-tools-extra] [clang-tidy] Fix crash in readability-identifier-naming with forward-… (PR #219769)

[Zeyi Xu via cfe-commits]

zeyi2 wrote:

Also I noticed that someone is already working on the issue: https://github.com/llvm/llvm-project/pull/219781

https://github.com/llvm/llvm-project/pull/219769