[mutter] keybindings: Add two extra checks for key grab binding

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

commit 1ef06207a42c6d2b44901bd4802cd67af99e8e59
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Apr 24 00:29:51 2014 -0400

    keybindings: Add two extra checks for key grab binding

 src/core/keybindings.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index 778d139..428b32a 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -1154,6 +1154,11 @@ meta_screen_change_keygrabs (MetaScreen *screen,
 void
 meta_screen_grab_keys (MetaScreen *screen)
 {
+  MetaBackend *backend = meta_get_backend ();
+
+  if (!META_IS_BACKEND_X11 (backend))
+    return;
+
   if (screen->all_keys_grabbed)
     return;
 
@@ -1187,6 +1192,11 @@ meta_window_change_keygrabs (MetaWindow *window,
 void
 meta_window_grab_keys (MetaWindow  *window)
 {
+  MetaBackend *backend = meta_get_backend ();
+
+  if (!META_IS_BACKEND_X11 (backend))
+    return;
+
   if (window->all_keys_grabbed)
     return;