Fix false error about wrong stream

- sendinv and sendaddress are sometimes being sent to connections that
  haven't been established yet, resulting in complaints about stream
  mismatch. The error should only be displayed once the connection has
  been established and the remote node provides its stream number

src/class_sendDataThread.py

@@ -182,8 +182,8 @@ class sendDataThread(threading.Thread):
                 elif command == 'connectionIsOrWasFullyEstablished':
                     self.connectionIsOrWasFullyEstablished = True
                     self.services, self.sslSock = data
-            else:
-                logger.error('sendDataThread ID: ' + str(id(self)) + ' ignoring command ' + command + ' because the thread is not in stream' + str(deststream))
+            elif self.connectionIsOrWasFullyEstablished:
+                logger.error('sendDataThread ID: ' + str(id(self)) + ' ignoring command ' + command + ' because the thread is not in stream ' + str(deststream))
             self.sendDataThreadQueue.task_done()
         self.sendDataThreadQueue.task_done()