Update src/ArduinoIoTCloudTCP.cpp

Co-authored-by: Mattia Pennasilico <m.pennasilico@arduino.cc>

src/ArduinoIoTCloudTCP.cpp

@@ -305,6 +305,7 @@ ArduinoIoTCloudTCP::State ArduinoIoTCloudTCP::handle_Connected()
 
   /* Check for new data from the MQTT client. */
   _mqttClient.poll();
+
   /* Retransmit data in case there was a lost transaction due
    * to phy layer or MQTT connectivity loss.
    */