[gnome-music] pep8: don't use != None (E711)

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit 6b406617a13ae572510a5acd893d3dcc5e35e509
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Mon Mar 24 12:45:44 2014 +0100

    pep8: don't use != None (E711)

 gnomemusic/view.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnomemusic/view.py b/gnomemusic/view.py
index 94b57e0..04275fd 100644
--- a/gnomemusic/view.py
+++ b/gnomemusic/view.py
@@ -170,7 +170,7 @@ class ViewContainer(Stack):
         else:
             self.view.set_selection_mode(False)
             self.header_bar.set_selection_mode(False)
-            self.player.eventBox.set_visible(self.player.currentTrack != None)
+            self.player.eventBox.set_visible(self.player.currentTrack is not None)
             self.selection_toolbar.eventbox.set_visible(False)
 
     def _on_cancel_button_clicked(self, button):