[gnome-music/gnome-3-12] playlist: fix a crash for item remove and no track playing

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit 6275a31c9b02c0137073d34c525ecb8b8cb7877c
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Tue Apr 15 13:31:23 2014 +0200

    playlist: fix a crash for item remove and no track playing

 gnomemusic/view.py |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/gnomemusic/view.py b/gnomemusic/view.py
index 558d00c..6d4f742 100644
--- a/gnomemusic/view.py
+++ b/gnomemusic/view.py
@@ -1135,11 +1135,10 @@ class Playlist(ViewContainer):
             if row[5].get_url() == uri:
                 # Is the removed track now being played?
                 if name == self.current_playlist:
-                    currentTrackpath = self.player.currentTrack.get_path().to_string()
-                    logger.debug("row.path=%s", row.path)
-                    logger.debug("currentTrackpath=%s", currentTrackpath)
-                    if row.path is not None and row.path.to_string() == currentTrackpath:
-                        update_playing_track = True
+                    if self.player.currentTrack is not None:
+                        currentTrackpath = self.player.currentTrack.get_path().to_string()
+                        if row.path is not None and row.path.to_string() == currentTrackpath:
+                            update_playing_track = True
 
                 model.remove(row.iter)