[gnome-software] category sidebar: Add 4px gap before the first row

[Kalev Lember <klember src gnome org>]

commit 0b64a260d755ef0622e452f609f8080a1b974dde
Author: Kalev Lember <klember redhat com>
Date:   Wed Sep 2 12:19:17 2015 +0200

    category sidebar: Add 4px gap before the first row

 src/gs-shell-category.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-shell-category.ui b/src/gs-shell-category.ui
index fa896ac..5712e74 100644
--- a/src/gs-shell-category.ui
+++ b/src/gs-shell-category.ui
@@ -24,6 +24,7 @@
             <child>
               <object class="GtkListBox" id="listbox_filter">
                 <property name="visible">True</property>
+                <property name="margin-top">4</property>
                 <property name="selection_mode">browse</property>
                 <property name="halign">fill</property>
               </object>