[gtk/icon-browser-tweaks: 1/2] icon-browser: Recover from GtkDialog api change

[Matthias Clasen <matthiasc src gnome org>]

commit 8d001e35733e4ae2119b16510e73bf4e04e8db9f
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Apr 16 20:59:57 2019 -0400

    icon-browser: Recover from GtkDialog api change
    
    When we moved content_area to a sibling of action area,
    it changed orientation from vertical to horizontal.
    Adapt to this change.

 demos/icon-browser/window.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/demos/icon-browser/window.ui b/demos/icon-browser/window.ui
index b38cb5eb08..40964afc44 100644
--- a/demos/icon-browser/window.ui
+++ b/demos/icon-browser/window.ui
@@ -121,6 +121,7 @@
     <property name="hide-on-close">1</property>
     <child internal-child="content_area">
       <object class="GtkBox">
+        <property name="orientation">vertical</property>
         <child>
           <object class="GtkGrid">
             <property name="margin">10</property>