Crypto: Do not block the main thread when retrying the decryption of an event #405
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The GH diff is not visually helpful at first. The change only consists in the use of a new method called
decryptEventFromCryptoThread
that does not require adispatch_async ... dispatch_sync
nasty thing.Retrying happens when we receive the key afterwards because of a late room key or because another user's device answers to our key share request.
In that case, as we are already in an asynchronously case, we do not need to come back to and block the main thread to decrypt the event as opposed to #205.