[clang] [clang-tools-extra] [clang][refactor] Refactor `findNextTokenIncludingComments` (PR #123060)

[Clement Courbet via cfe-commits]

legrosbuffle wrote:

Thanks, and sorry I had to force-push because github would not refresh the PR (https://github.com/orgs/community/discussions/78775)

https://github.com/llvm/llvm-project/pull/123060