[gtk+] gtk-demo: Fix builder example

[Matthias Clasen <matthiasc src gnome org>]

commit 75057db990d630b2f0532c40cb666ce9c40fbbbe
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 14 09:35:01 2015 -0400

    gtk-demo: Fix builder example
    
    This example is still using a GtkVBox, and it happened to be broken
    by gtk-builder-tool simplify.

 demos/gtk-demo/demo.ui |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/demo.ui b/demos/gtk-demo/demo.ui
index 9f3aa13..f14eb2e 100644
--- a/demos/gtk-demo/demo.ui
+++ b/demos/gtk-demo/demo.ui
@@ -157,6 +157,9 @@
               </object>
             </child>
           </object>
+          <packing>
+            <property name="expand">0</property>
+          </packing>
         </child>
         <child>
           <object class="GtkToolbar" id="toolbar1">
@@ -222,6 +225,7 @@
             </child>
           </object>
           <packing>
+            <property name="expand">0</property>
             <property name="position">1</property>
           </packing>
         </child>
@@ -289,6 +293,7 @@
           </object>
           <packing>
             <property name="position">3</property>
+            <property name="expand">0</property>
           </packing>
         </child>
       </object>