Changed the use of string concatenation of String.format in favor of formatted logging methods

netty_parser/src/main/java/org/dna/mqtt/moquette/parser/netty/PublishDecoder.java

@@ -19,14 +19,14 @@ class PublishDecoder extends DemuxDecoder {
 
     @Override
     void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
-        LOG.info("decode invoked with buffer " + in);
+        LOG.info("decode invoked with buffer {}", in);
         in.resetReaderIndex();
         int startPos = in.readerIndex();
 
         //Common decoding part
         PublishMessage message = new PublishMessage();
         if (!decodeCommonHeader(message, in)) {
-            LOG.info("decode ask for more data after " + in);
+            LOG.info("decode ask for more data after {}", in);
             in.resetReaderIndex();
             return;
         }