[iagno] computer-player: only use GTK+ on the UI thread

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2fe4898c2eee33d08db4da5bc54d6b82d77fc154
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sat Sep 20 11:14:59 2014 -0500

    computer-player: only use GTK+ on the UI thread
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736941

 src/computer-player.vala |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/computer-player.vala b/src/computer-player.vala
index 389c2ca..649edea 100644
--- a/src/computer-player.vala
+++ b/src/computer-player.vala
@@ -105,7 +105,12 @@ public class ComputerPlayer : Object
         }
 
         pending_move_id = 0;
-        complete_move (x, y);
+
+        /* complete_move() needs to be called on the UI thread. */
+        Idle.add (() => {
+            complete_move (x, y);
+            return Source.REMOVE;
+        });
     }
 
     public void cancel_move ()