[clang] [Clang] Fix false-positive fallthrough warning (#230802) (PR #234848)

[Adinesh Reddy via cfe-commits]

Adinesh-Reddy wrote:

> I don't think we need a separate Testing section here just to say the regression tests pass; that's expected, and CI already reports the results.



> I don't think we need a separate Testing section here just to say the regression tests pass; that's expected, and CI already reports the results.

ok, i will remove that part


https://github.com/llvm/llvm-project/pull/234848