Fix music sync with info/cover/notification

app/src/main/java/com/cappielloantonio/play/viewmodel/PlayerBottomSheetViewModel.java

@@ -38,11 +38,7 @@ public class PlayerBottomSheetViewModel extends AndroidViewModel {
     }
 
     public void setFavorite() {
-        if(song.isFavorite())
-            song.setFavorite(false);
-        else
-            song.setFavorite(true);
-
+        song.setFavorite(!song.isFavorite());
         songRepository.setFavoriteStatus(song);
     }