[gtk+] widget-factory: fix page 3 widget expand

[Matthias Clasen <matthiasc src gnome org>]

commit 4cf39f65b2374566c00be7cdf24d68dbc199cca8
Author: Timm Bäder <mail baedert org>
Date:   Tue Jul 18 14:13:05 2017 +0200

    widget-factory: fix page 3 widget expand
    
    The treeview/listbox on the left side should not expand.

 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 c3d6645..5a03f0f 100644
--- a/demos/widget-factory/widget-factory.ui
+++ b/demos/widget-factory/widget-factory.ui
@@ -2493,6 +2493,7 @@ microphone-sensitivity-medium-symbolic</property>
                             <property name="height-request">300</property>
                             <property name="halign">start</property>
                             <property name="shadow-type">in</property>
+                            <property name="hexpand">0</property>
                             <child>
                               <object class="GtkTreeView" id="charletree">
                                 <property name="enable-grid-lines">vertical</property>