Properly clear presence message when the queue runs dry.

src/main/java/moe/nekojimi/chords/MusicHandler.java

@@ -106,11 +106,11 @@ public class MusicHandler implements AudioSendHandler, Closeable, Consumer<Song>
                 currentSong = null;
             }
             currentSong = songQueue.poll();
+            if (nowPlayingConsumer != null)
+                nowPlayingConsumer.accept(currentSong);
             if (currentSong == null)
                 return false;
             System.out.println("Playing song " + currentSong.getLocation().getAbsolutePath());
-            if (nowPlayingConsumer != null)
-                nowPlayingConsumer.accept(currentSong);
             arrayErr = false;
             in = AudioSystem.getAudioInputStream(currentSong.getLocation());
             AudioFormat decodedFormat = AudioSendHandler.INPUT_FORMAT;