broker/MeassageMetrics: code formatter used

broker/src/main/java/io/moquette/server/netty/metrics/MessageMetrics.java

@@ -13,9 +13,11 @@
  *
  * You may elect to redistribute this code under either of these licenses.
  */
+
 package io.moquette.server.netty.metrics;
 
 public class MessageMetrics {
+
     private long m_messagesRead = 0;
     private long m_messageWrote = 0;
 
@@ -34,4 +36,4 @@ public class MessageMetrics {
     public long messagesWrote() {
         return m_messageWrote;
     }
-}
+}