[epiphany] prefs-dialog.ui: Correct visual bug introduced by 8c30676462.

[Arnaud Bonatti <arnaudb src gnome org>]

commit b8fbcdd776ea4bf0f6e0add6a118e367d1c3c7fc
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Oct 31 19:49:48 2015 +0100

    prefs-dialog.ui: Correct visual bug introduced by 8c30676462.

 src/resources/prefs-dialog.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/prefs-dialog.ui b/src/resources/prefs-dialog.ui
index bce778d..3d20b37 100644
--- a/src/resources/prefs-dialog.ui
+++ b/src/resources/prefs-dialog.ui
@@ -29,6 +29,7 @@
         <property name="visible">True</property>
         <property name="orientation">vertical</property>
         <property name="spacing">2</property>
+        <property name="border_width">0</property>
         <child>
           <object class="GtkNotebook">
             <property name="visible">True</property>