[gnome-disk-utility] Fix main layout with GTK+ 3.22

[Michael Catanzaro <mcatanzaro src gnome org>]

commit dad43fe24ec02f19a2e697aa3b71b24a6cc80352
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Sep 1 08:11:08 2016 -0500

    Fix main layout with GTK+ 3.22
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770694

 src/disks/ui/disks.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/disks/ui/disks.ui b/src/disks/ui/disks.ui
index d0b4144..feee333 100644
--- a/src/disks/ui/disks.ui
+++ b/src/disks/ui/disks.ui
@@ -1116,6 +1116,7 @@
             </child>
           </object>
           <packing>
+            <property name="expand">True</property>
             <property name="pack-type">end</property>
           </packing>
         </child>