[gbrainy] Current game may be null, check for it

[Jordi Mas <jmas src gnome org>]

commit 12839e6900693ac06a1cc2f82508d46c06a6b340
Author: Jordi Mas <jmas softcatala org>
Date:   Sat Jul 24 08:38:58 2010 +0200

    Current game may be null, check for it

 src/Core/Main/GameSession.cs |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/src/Core/Main/GameSession.cs b/src/Core/Main/GameSession.cs
index 9557f70..050e727 100644
--- a/src/Core/Main/GameSession.cs
+++ b/src/Core/Main/GameSession.cs
@@ -260,14 +260,18 @@ namespace gbrainy.Core.Main
 			EnableTimer = false;
 			paused = true;
 			current_time = Catalog.GetString ("Paused");
-			CurrentGame.EnableMouseEvents (false);
+
+			if (CurrentGame != null)
+				CurrentGame.EnableMouseEvents (false);
 		}
 
 		public void Resume ()
 		{
 			EnableTimer = true;
 			paused = false;
-			CurrentGame.EnableMouseEvents (true);
+
+			if (CurrentGame != null)
+				CurrentGame.EnableMouseEvents (true);
 		}
 
 		public bool ScoreGame (string answer)