broker/DebugUtils: code formatter used

broker/src/main/java/io/moquette/spi/impl/DebugUtils.java

@@ -13,10 +13,10 @@
  *
  * You may elect to redistribute this code under either of these licenses.
  */
+
 package io.moquette.spi.impl;
 
 import io.netty.buffer.ByteBuf;
-
 import java.nio.ByteBuffer;
 
 /**
@@ -24,6 +24,7 @@ import java.nio.ByteBuffer;
  * @author andrea
  */
 class DebugUtils {
+
     static String payload2Str(ByteBuffer content) {
         byte[] b = new byte[content.remaining()];
         content.mark();