[gnome-shell-extensions/wip/window-list: 10/13] icon-geometry: Guard against older mutter versions

[Florian MÃllner <fmuellner src gnome org>]

commit a17e3828e6fabf92ef454871bd189403b079b62f
Author: Florian MÃllner <fmuellner gnome org>
Date:   Wed Jan 23 21:33:49 2013 +0100

    icon-geometry: Guard against older mutter versions

 extensions/window-list/extension.js |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/extensions/window-list/extension.js b/extensions/window-list/extension.js
index 9ffd817..d16c8db 100644
--- a/extensions/window-list/extension.js
+++ b/extensions/window-list/extension.js
@@ -88,6 +88,9 @@ const WindowButton = new Lang.Class({
     },
 
     _updateIconGeometry: function() {
+        if (!this.metaWindow.set_icon_geometry)
+            return;
+
         let [x, y] = this.actor.get_transformed_position();
         let [w, h] = this.actor.get_transformed_size();
 
@@ -301,6 +304,9 @@ const WindowList = new Lang.Class({
 
         let windows = Meta.get_window_actors(global.screen);
         for (let i = 0; i < windows.length; i++) {
+            if (!windows[i].metaWindow.set_icon_geometry)
+                return;
+
             windows[i].metaWindow.set_icon_geometry(null);
         }
     }