Merge pull request #542 from Brice-W/error-handling-group-creation

Improved Group Creation Error Handling

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

@@ -54,8 +54,14 @@ fun MessageSender.create(name: String, members: Collection<String>): Promise<Str
         for (member in members) {
             val closedGroupControlMessage = ClosedGroupControlMessage(closedGroupUpdateKind)
             closedGroupControlMessage.sentTimestamp = sentTime
-            sendNonDurably(closedGroupControlMessage, Address.fromSerialized(member)).get()
+            try {
+                sendNonDurably(closedGroupControlMessage, Address.fromSerialized(member)).get()
+            } catch (e: Exception) {
+                deferred.reject(e)
+                return@queue
+            }
         }
+
         // Add the group to the user's set of public keys to poll for
         storage.addClosedGroupPublicKey(groupPublicKey)
         // Store the encryption key pair