[gnome-shell] ShellGlobal: update for Mutter API changes

[Giovanni Campagna <gcampagna src gnome org>]

commit f7c3cf5d78f6dc519c19b6ac1aac5c3dd7e45be8
Author: Giovanni Campagna <gcampagn redhat com>
Date:   Tue Aug 13 16:43:23 2013 +0200

    ShellGlobal: update for Mutter API changes
    
    meta_plugin_begin_modal() was simplified to always grab on the
    stage, which is what we want.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=705917

 src/shell-global.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/shell-global.c b/src/shell-global.c
index c3ff531..83f8c46 100644
--- a/src/shell-global.c
+++ b/src/shell-global.c
@@ -1003,7 +1003,7 @@ shell_global_begin_modal (ShellGlobal       *global,
   if (global->has_modal)
     return FALSE;
 
-  global->has_modal = meta_plugin_begin_modal (global->plugin, global->stage_xwindow, None, options, 
timestamp);
+  global->has_modal = meta_plugin_begin_modal (global->plugin, options, timestamp);
   sync_input_region (global);
   return global->has_modal;
 }