[gnome-system-tools] Use GtkDialog:response signal instead of ->response class member

[Milan Bouchet-Valat <milanbv src gnome org>]

commit 9ffbce9fafe228d7b37f2926b15d1be79fd2ebd5
Author: Milan Bouchet-Valat <nalimilan club fr>
Date:   Sat Feb 12 17:53:01 2011 +0100

    Use GtkDialog:response signal instead of ->response class member
    
    This fixes closing GstDialogs and launching the help.

 src/common/gst-dialog.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/common/gst-dialog.c b/src/common/gst-dialog.c
index 8a95558..cd615bf 100644
--- a/src/common/gst-dialog.c
+++ b/src/common/gst-dialog.c
@@ -114,14 +114,12 @@ static void
 gst_dialog_class_init (GstDialogClass *class)
 {
 	GObjectClass *object_class = G_OBJECT_CLASS (class);
-	GtkDialogClass *dialog_class = GTK_DIALOG_CLASS (class);
 	GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 
 	object_class->set_property = gst_dialog_set_property;
 	object_class->constructor  = gst_dialog_constructor;
 	object_class->finalize     = gst_dialog_finalize;
 
-	dialog_class->response     = gst_dialog_response;
 	widget_class->delete_event = gst_dialog_delete_event;
 	widget_class->realize      = gst_dialog_realize;
 
@@ -204,6 +202,8 @@ gst_dialog_constructor (GType                  type,
 	dialog = GST_DIALOG (object);
 	priv = GST_DIALOG_GET_PRIVATE (dialog);
 
+	g_signal_connect (object, "response", G_CALLBACK(gst_dialog_response), NULL);
+
 	if (priv->tool && priv->widget_name) {
 		priv->builder = gtk_builder_new ();