[gnome-packagekit] trivial: Don't use deprecated GTK API

[Richard Hughes <rhughes src gnome org>]

commit 87cdff0b1b8350032781b2870933e6b9199f57c3
Author: Richard Hughes <richard hughsie com>
Date:   Mon Jul 18 14:05:31 2016 +0100

    trivial: Don't use deprecated GTK API

 src/gpk-task.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/gpk-task.c b/src/gpk-task.c
index 641475f..d34d103 100644
--- a/src/gpk-task.c
+++ b/src/gpk-task.c
@@ -587,7 +587,6 @@ gpk_task_setup_dialog_untrusted (GpkTask *task)
        g_signal_connect (widget, "delete_event", G_CALLBACK (gpk_task_button_decline_cb), task);
 
        /* set icon name */
-       widget = GTK_WIDGET (gtk_builder_get_object (task->priv->builder_untrusted, "dialog_error"));
        gtk_window_set_icon_name (GTK_WINDOW(widget), GPK_ICON_SOFTWARE_INSTALLER);
 
        /* connect up buttons */
@@ -605,10 +604,9 @@ gpk_task_setup_dialog_untrusted (GpkTask *task)
        /* TRANSLATORS: button tooltip */
        gtk_widget_set_tooltip_text (button, _("Force installing package"));
 
-       /* add to box */
+       /* add to dialog */
        widget = GTK_WIDGET (gtk_builder_get_object (task->priv->builder_untrusted, "dialog_error"));
-       widget = gtk_dialog_get_action_area (GTK_DIALOG(widget));
-       gtk_box_pack_start (GTK_BOX (widget), button, FALSE, FALSE, 0);
+       gtk_dialog_add_action_widget (GTK_DIALOG (widget), button, GTK_RESPONSE_NONE);
        gtk_widget_show (button);
 }