dialog: Stop exporting action_box

This was not meant as an internal child that subclasses
can refer to in their .ui files.

https://bugzilla.gnome.org/show_bug.cgi?id=761254

diff --git a/gtk/gtkdialog.c b/gtk/gtkdialog.c
index f8476ac7d278b0a38593d447efd3650acd200e82..ad1828ad6217cc714bf013efa5c7c69f1696b1a4 100644 (file)
--- a/gtk/gtkdialog.c
+++ b/gtk/gtkdialog.c
@@ -663,7 +663,7 @@ gtk_dialog_class_init (GtkDialogClass *class)
   gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, vbox);
   gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, headerbar);
   gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, action_area);
-  gtk_widget_class_bind_template_child_internal_private (widget_class, GtkDialog, action_box);
+  gtk_widget_class_bind_template_child_private (widget_class, GtkDialog, action_box);
   gtk_widget_class_bind_template_callback (widget_class, gtk_dialog_delete_event_handler);
 
   gtk_widget_class_set_css_name (widget_class, "dialog");