[longomatch] Prevent cancelling the edition using an already deallocated Handle

[Andoni Morales Alastruey <amorales src gnome org>]

commit b33e824455299ae0b08e6d1ad0b6c81e85d3986f
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Sat Mar 6 16:56:42 2010 +0100

    Prevent cancelling the edition using an already deallocated Handle

 CesarPlayer/Editor/GstVideoSplitter.cs |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/CesarPlayer/Editor/GstVideoSplitter.cs b/CesarPlayer/Editor/GstVideoSplitter.cs
index ccac905..1300941 100644
--- a/CesarPlayer/Editor/GstVideoSplitter.cs
+++ b/CesarPlayer/Editor/GstVideoSplitter.cs
@@ -303,7 +303,11 @@ namespace LongoMatch.Video.Editor {
 		static extern void gst_video_editor_cancel(IntPtr raw);
 
 		public void Cancel() {
-			gst_video_editor_cancel(Handle);
+			// The handle might have already been dealocated
+			try{
+				gst_video_editor_cancel(Handle);
+			}catch{
+			}
 		}
 		
 		[DllImport("libcesarplayer.dll")]