[banshee] TrackActions: prefer InvalidCastException over NREs

[Andrés Aragoneses <aaragoneses src gnome org>]

commit 43b2e0ccc75d94b983b6a6467be06e49ce14c472
Author: Andrés G. Aragoneses <knocte gmail com>
Date:   Tue May 20 13:29:12 2014 +0200

    TrackActions: prefer InvalidCastException over NREs
    
    Replace dynamic casts with static casts in a couple of places where
    the null-check is not performed before dereferencing the variable.

 .../Banshee.Gui/TrackActions.cs                    |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/Core/Banshee.ThickClient/Banshee.Gui/TrackActions.cs 
b/src/Core/Banshee.ThickClient/Banshee.Gui/TrackActions.cs
index ca0a350..c4ad257 100644
--- a/src/Core/Banshee.ThickClient/Banshee.Gui/TrackActions.cs
+++ b/src/Core/Banshee.ThickClient/Banshee.Gui/TrackActions.cs
@@ -428,7 +428,7 @@ namespace Banshee.Gui
             }
 
             // TODO find just the menu that was activated instead of modifying all proxies
-            foreach (Widget proxy_widget in (o as Gtk.Action).Proxies) {
+            foreach (Widget proxy_widget in ((Gtk.Action)o).Proxies) {
                 MenuItem menu = proxy_widget as MenuItem;
                 if (menu == null)
                     continue;
@@ -563,7 +563,7 @@ namespace Banshee.Gui
         private void OnRateTracks (object o, EventArgs args)
         {
             ThreadAssist.SpawnFromMain (delegate {
-                (ActiveSource as DatabaseSource).RateSelectedTracks (rating_proxy.LastRating);
+                ((DatabaseSource)ActiveSource).RateSelectedTracks (rating_proxy.LastRating);
             });
         }