return_linter() should allow switch() where every entry has an exit call

[MichaelChirico]

          @MichaelChirico I don't think we should give a lint here. In my opinion this is a false positive, as there is no way an implicit return is given.

My first implementation handled this accordingly. Maybe we could do that again.

Originally posted by @MEO265 in #2271 (comment)