[move-only] Emit a clearer message around deinits. #64289
Merged
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Specifically:
Fix the error message so that when we say you can't have a deinit that a deinit can be on a noncopyable type along side a class or an actor.
Even though we already error on @objc enums and say they cannot be noncopyable, we did not emit an error on the deinit saying that @objc enums cannot have a deinit. I put in a nice to have error just to make it even clearer.
rdar://105855978
rdar://106566054