Fixed a lot of possible issues raised by a code inspection

app/src/main/java/com/cappielloantonio/play/broadcast/receiver/MediaButtonIntentReceiver.java

@@ -48,7 +48,6 @@ public class MediaButtonIntentReceiver extends BroadcastReceiver {
 
     @SuppressLint("HandlerLeak")
     private static final Handler mHandler = new Handler() {
-
         @Override
         public void handleMessage(final Message msg) {
             switch (msg.what) {