[longomatch] Fix dipose in canvases when Objects is null

[Andoni Morales Alastruey <amorales src gnome org>]

commit 73b3b2e6dea0091831fcb67ffe5f7838ee34a106
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Fri Sep 5 00:52:25 2014 +0200

    Fix dipose in canvases when Objects is null

 LongoMatch.Drawing/Canvas.cs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/LongoMatch.Drawing/Canvas.cs b/LongoMatch.Drawing/Canvas.cs
index 66739d3..ed17f5f 100644
--- a/LongoMatch.Drawing/Canvas.cs
+++ b/LongoMatch.Drawing/Canvas.cs
@@ -74,8 +74,8 @@ namespace LongoMatch.Drawing
                                foreach (CanvasObject co in Objects) {
                                        co.Dispose ();
                                }
+                               Objects.Clear ();
                        }
-                       Objects.Clear ();
                }
 
                public List<ICanvasObject> Objects {