[gnome-chess] Better workaround for signal misfires

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 10e74eb03f7d516995697f112850e29ea3ceafd4
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Jun 22 21:54:09 2014 -0500

    Better workaround for signal misfires

 lib/chess-game.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/lib/chess-game.vala b/lib/chess-game.vala
index 82c98a9..b994de2 100644
--- a/lib/chess-game.vala
+++ b/lib/chess-game.vala
@@ -32,7 +32,7 @@ public enum ChessRule
     BUG
 }
 
-public class ChessGame
+public class ChessGame : Object
 {
     public bool is_started;
     public ChessResult result;