[gtk+] widget-factory: Disconnect clipboard watcher on close

[Benjamin Otte <otte src gnome org>]

commit 1e1064398c7607d197c563c42f8901ac67982a9f
Author: Benjamin Otte <otte redhat com>
Date:   Wed Dec 16 15:43:05 2015 +0100

    widget-factory: Disconnect clipboard watcher on close
    
    The clipboard emit events after the button we connected it to was
    already destroyed (on application close for example), so make sure we
    don't try to use that dead button.

 demos/widget-factory/widget-factory.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/widget-factory/widget-factory.c b/demos/widget-factory/widget-factory.c
index ee2ae5a..5947364 100644
--- a/demos/widget-factory/widget-factory.c
+++ b/demos/widget-factory/widget-factory.c
@@ -1670,8 +1670,8 @@ activate (GApplication *app)
                     G_CALLBACK (textbuffer_notify_selection), widget);
   widget = (GtkWidget *)gtk_builder_get_object (builder, "pastebutton");
   g_signal_connect (widget, "clicked", G_CALLBACK (handle_cutcopypaste), widget2);
-  g_signal_connect (gtk_widget_get_clipboard (widget2, GDK_SELECTION_CLIPBOARD), "owner-change",
-                    G_CALLBACK (clipboard_owner_change), widget);
+  g_signal_connect_object (gtk_widget_get_clipboard (widget2, GDK_SELECTION_CLIPBOARD), "owner-change",
+                           G_CALLBACK (clipboard_owner_change), widget);
 
   widget = (GtkWidget *)gtk_builder_get_object (builder, "osd_frame");
   widget2 = (GtkWidget *)gtk_builder_get_object (builder, "totem_like_osd");