[banshee] MeeGo: Fix NRE at start up (bgo#637333)

[Alexander Kojevnikov <alexk src gnome org>]

commit 6254f3a4afac22acc58181a481d8e6c9e321eeda
Author: Alexander Kojevnikov <alexander kojevnikov com>
Date:   Thu Dec 16 09:40:26 2010 +0800

    MeeGo: Fix NRE at start up (bgo#637333)

 .../Banshee.Sources.Gui/SourceRowRenderer.cs       |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/Core/Banshee.ThickClient/Banshee.Sources.Gui/SourceRowRenderer.cs b/src/Core/Banshee.ThickClient/Banshee.Sources.Gui/SourceRowRenderer.cs
index b8337ac..e08e8ed 100644
--- a/src/Core/Banshee.ThickClient/Banshee.Sources.Gui/SourceRowRenderer.cs
+++ b/src/Core/Banshee.ThickClient/Banshee.Sources.Gui/SourceRowRenderer.cs
@@ -49,8 +49,8 @@ namespace Banshee.Sources.Gui
                 return;
             }
 
-            var type = (SourceModel.EntryType) model.GetValue (iter, (int)SourceModel.Columns.Type);
-            if (type != SourceModel.EntryType.Source) {
+            var type = model.GetValue (iter, (int)SourceModel.Columns.Type);
+            if (type == null || (SourceModel.EntryType) type != SourceModel.EntryType.Source) {
                 renderer.Visible = false;
                 return;
             }