[gimp] file-png: fix up the advanced options orientation

[Simon Budig <simon src gnome org>]

commit 6ce7e42037dde652301c5bfbe97afa5d3d9d7a97
Author: Simon Budig <simon budig de>
Date:   Tue May 22 16:00:14 2018 +0200

    file-png: fix up the advanced options orientation

 plug-ins/ui/plug-in-file-png.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plug-ins/ui/plug-in-file-png.ui b/plug-ins/ui/plug-in-file-png.ui
index 71582f6..97ccef0 100644
--- a/plug-ins/ui/plug-in-file-png.ui
+++ b/plug-ins/ui/plug-in-file-png.ui
@@ -221,6 +221,7 @@
           <object class="GtkBox" id="box1">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
+            <property name="orientation">vertical</property>
             <child>
               <object class="GtkCheckButton" id="sv_exif">
                 <property name="label" translatable="yes">Save Exif data</property>