[mutter] keybindings: Make sure to unfreeze the keyboard on the right xdisplay

[Jasper St. Pierre <jstpierre src gnome org>]

commit 03efa3ccbc39499be49d87ee10ac917db4d2233f
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Apr 30 09:30:35 2014 -0400

    keybindings: Make sure to unfreeze the keyboard on the right xdisplay
    
    This fixes keybindings getting "stuck" after being activated in
    X11 compositor mode.

 src/core/keybindings.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index f0b6122..515f71d 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -1767,9 +1767,16 @@ meta_display_process_key_event (MetaDisplay     *display,
         return TRUE;
     }
 
-  XIAllowEvents (display->xdisplay,
-                 clutter_input_device_get_device_id (event->device),
-                 XIAsyncDevice, event->time);
+  {
+    MetaBackend *backend = meta_get_backend ();
+    if (META_IS_BACKEND_X11 (backend))
+      {
+        Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
+        XIAllowEvents (xdisplay,
+                       clutter_input_device_get_device_id (event->device),
+                       XIAsyncDevice, event->time);
+      }
+  }
 
   keep_grab = TRUE;
   if (all_keys_grabbed)