[gtk+] Use a big icon in the stack example

[Matthias Clasen <matthiasc src gnome org>]

commit 5f9331519aa2ed3318f38924d473f224c24c5d8b
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 5 21:47:29 2013 -0500

    Use a big icon in the stack example
    
    We used a 256x256 before. Keep doing that.

 demos/widget-factory/widget-factory.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/demos/widget-factory/widget-factory.ui b/demos/widget-factory/widget-factory.ui
index b4b6d28..e669871 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -1884,6 +1884,7 @@ Suspendisse feugiat quam quis dolor accumsan cursus. </property>
                               <object class="GtkImage" id="imageo">
                                 <property name="visible">True</property>
                                 <property name="icon-name">gtk3-widget-factory</property>
+                                <property name="pixel-size">256</property>
                               </object>
                               <packing>
                                 <property name="name">page2</property>