[iagno] Reallow undo after the end of the game

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 370e5931cf7507dd96b77f633716e9c04c2b37d8
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sat Sep 28 20:27:02 2013 -0500

    Reallow undo after the end of the game
    
    This now works fine, even if the board has been flipped.  Not sure
    what's changed to fix this.

 src/iagno.vala |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/iagno.vala b/src/iagno.vala
index 8a58f1f..69c091c 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -369,7 +369,6 @@ public class Iagno : Gtk.Application
     private void game_complete_cb ()
     {
         update_ui ();
-        undo_action.set_enabled (false);
 
         if (game.n_light_tiles > game.n_dark_tiles)
             show_message (_("Light player wins!"), Gtk.MessageType.INFO);