[zenity] Fix zenity --list

[Arx Henrique Pereira da Cruz <arxcruz src gnome org>]

commit 95530a164781a1dce681ac445d3f4e1248d448d9
Author: Arx Cruz <arxcruz gnome org>
Date:   Tue Jun 23 11:25:29 2015 +0200

    Fix zenity --list
    
    For some reason, glade is removing some properties from the xml file

 src/zenity.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/zenity.ui b/src/zenity.ui
index d313932..b16ea73 100644
--- a/src/zenity.ui
+++ b/src/zenity.ui
@@ -1024,6 +1024,7 @@
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
                 <property name="shadow_type">in</property>
+                <property name="expand">True</property>
                 <child>
                   <object class="GtkTreeView" id="zenity_tree_view">
                     <property name="visible">True</property>