send unsend request as sync message

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/MessageSender.kt

@@ -254,9 +254,9 @@ object MessageSender {
     fun handleSuccessfulMessageSend(message: Message, destination: Destination, isSyncMessage: Boolean = false, openGroupSentTimestamp: Long = -1) {
         val storage = MessagingModuleConfiguration.shared.storage
         val userPublicKey = storage.getUserPublicKey()!!
-        val messageID = storage.getMessageIdInDatabase(message.sentTimestamp!!, message.sender?:userPublicKey) ?: return
         // Ignore future self-sends
         storage.addReceivedMessageTimestamp(message.sentTimestamp!!)
+        storage.getMessageIdInDatabase(message.sentTimestamp!!, message.sender?:userPublicKey)?.let { messageID ->
             if (openGroupSentTimestamp != -1L && message is VisibleMessage) {
                 storage.addReceivedMessageTimestamp(openGroupSentTimestamp)
                 storage.updateSentTimestamp(messageID, message.isMediaMessage(), openGroupSentTimestamp, message.threadID!!)
@@ -283,6 +283,7 @@ object MessageSender {
             if (message is VisibleMessage && !isSyncMessage) {
                 SSKEnvironment.shared.messageExpirationManager.startAnyExpiration(message.sentTimestamp!!, message.sender?:userPublicKey)
             }
+        }
         // Sync the message if:
         // • it's a visible message
         // • the destination was a contact