[gtk+] gtk-demo: Fix up the inline-toolbar example

[Matthias Clasen <matthiasc src gnome org>]

commit 7f9223b0c8a73fc6f1aa9cd8a9f60958d9880686
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Mar 4 20:49:10 2016 -0500

    gtk-demo: Fix up the inline-toolbar example
    
    The inline toolbar in the style classes demo should use
    the icons toolbar-style to ensure that the buttons are square.

 demos/gtk-demo/theming.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/theming.ui b/demos/gtk-demo/theming.ui
index ee0414b..7455e6d 100644
--- a/demos/gtk-demo/theming.ui
+++ b/demos/gtk-demo/theming.ui
@@ -182,6 +182,7 @@
         <property name="visible">1</property>
         <property name="hexpand">1</property>
         <property name="icon_size">1</property>
+        <property name="toolbar-style">icons</property>
         <style>
           <class name="inline-toolbar"/>
         </style>