broker/ClientNettyMQTTHandler: code formatter used

broker/src/test/java/io/moquette/testclient/ClientNettyMQTTHandler.java

@@ -13,6 +13,7 @@
  *
  * You may elect to redistribute this code under either of these licenses.
  */
+
 package io.moquette.testclient;
 
 import io.moquette.server.netty.NettyMQTTHandler;