[gtk+] print: disconnect source_changed_handler on printeroptionwidget finalize

[Matthias Clasen <matthiasc src gnome org>]

commit ad764c8a58579c6f0427c3584b00530a32001303
Author: Alban Browaeys <prahal yahoo com>
Date:   Thu Mar 21 09:45:32 2013 +0100

    print: disconnect source_changed_handler on printeroptionwidget finalize
    
    Printing a web page without window.print (which still segfault),
    that is Ctrl+P is fixed (does not attempt to execute the
    source_changed_handler on a printeroptionwidget that has been
    destroyed) by disconnecting this handler in the printeroptionwidget
    finalize.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=696622

 gtk/gtkprinteroptionwidget.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/gtkprinteroptionwidget.c b/gtk/gtkprinteroptionwidget.c
index 44c54ad..36b8c9d 100644
--- a/gtk/gtkprinteroptionwidget.c
+++ b/gtk/gtkprinteroptionwidget.c
@@ -152,6 +152,8 @@ gtk_printer_option_widget_finalize (GObject *object)
   
   if (priv->source)
     {
+      g_signal_handler_disconnect (priv->source,
+                                  priv->source_changed_handler);
       g_object_unref (priv->source);
       priv->source = NULL;
     }