[gnome-software] update dialog: trivial: Don't expand the list box vertically

[Kalev Lember <klember src gnome org>]

commit 202fcb1c28ce606514f350088d7d0acaeedab576
Author: Kalev Lember <klember redhat com>
Date:   Wed Oct 10 12:21:04 2018 +0200

    update dialog: trivial: Don't expand the list box vertically
    
    This inadvertently changed with the recent GtkBox packing changes.

 src/gs-update-dialog.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/gs-update-dialog.ui b/src/gs-update-dialog.ui
index 25734a63..a9c57d1d 100644
--- a/src/gs-update-dialog.ui
+++ b/src/gs-update-dialog.ui
@@ -221,6 +221,7 @@
                       <object class="GtkBox" id="os_update_box">
                         <property name="visible">True</property>
                         <property name="orientation">vertical</property>
+                        <property name="vexpand">False</property>
                       </object>
                     </child>
                   </object>