[libepc/gtk4] gtk4: examples: Replace GtkHButtonBox.

[Murray Cumming <murrayc src gnome org>]

commit 3806847d0a46fe6643bc266667be7a26821263dc
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Nov 22 08:55:02 2016 +0100

    gtk4: examples: Replace GtkHButtonBox.

 examples/publisher.ui |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/examples/publisher.ui b/examples/publisher.ui
index 3ddd7d7..94906ea 100644
--- a/examples/publisher.ui
+++ b/examples/publisher.ui
@@ -360,7 +360,8 @@
           <placeholder/>
         </child>
         <child internal-child="action_area">
-          <object class="GtkHButtonBox" id="dialog-action_area1">
+          <object class="GtkButtonBox" id="dialog-action_area1">
+            <property name="orientation">GTK_ORIENTATION_HORIZONTAL</property>
             <property name="visible">True</property>
             <property name="events">GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | 
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK</property>
             <property name="layout_style">GTK_BUTTONBOX_END</property>