[banshee] Fix NRE in TrackInfoDisplay (BGO #604180)

[Gabriel Burt <gburt src gnome org>]

commit 4176dbfba15556814fa598a12ac6bd8071d15cd5
Author: Andrés G. Aragoneses <aaragoneses novell com>
Date:   Wed Dec 9 10:09:08 2009 -0800

    Fix NRE in TrackInfoDisplay (BGO #604180)
    
    Signed-off-by: Gabriel Burt <gabriel burt gmail com>

 .../Banshee.Gui.Widgets/TrackInfoDisplay.cs        |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/Core/Banshee.ThickClient/Banshee.Gui.Widgets/TrackInfoDisplay.cs b/src/Core/Banshee.ThickClient/Banshee.Gui.Widgets/TrackInfoDisplay.cs
index 004098a..0d7e3ed 100644
--- a/src/Core/Banshee.ThickClient/Banshee.Gui.Widgets/TrackInfoDisplay.cs
+++ b/src/Core/Banshee.ThickClient/Banshee.Gui.Widgets/TrackInfoDisplay.cs
@@ -366,7 +366,8 @@ namespace Banshee.Gui.Widgets
 
         private bool IdleTimeout ()
         {
-            if (ServiceManager.PlayerEngine.CurrentTrack == null ||
+            if (ServiceManager.PlayerEngine == null ||
+                ServiceManager.PlayerEngine.CurrentTrack == null ||
                 ServiceManager.PlayerEngine.CurrentState == PlayerState.Idle) {
                 incoming_track = null;
                 incoming_image = null;