error when saving sometimes with tagger

[AnthonyWaters]

1: Unknown error writing tag for /home/anthony/music/WWE Theme Songs - John Cena - My Time Is Now.mp3

-----------------------
 write_tags ( xl/editor.py @ 106):
-----------------------
Traceback (most recent call last):
  File "xl/editor.py", line 155, in write_tags
    exaile.tracks.refresh_row(track)
  File "/home/anthony/development/exaile/xl/gui/playlist.py", line 887, in refresh_row
    self.update_song_list(song, check)
  File "/home/anthony/development/exaile/xl/gui/playlist.py", line 871, in update_song_list
    index = self.songs.index(orig_song)
  File "xl/library.py", line 112, in index
    return self._inner.index(item)
ValueError: list.index(x): x not in list

Despite it failing it correctly updates the song in the list

The patch just takes out the part that updates the list (it seems as though the list is updated without this line)