[nautilus] notebook: add missing part for last commit

[Cosimo Cecchi <cosimoc src gnome org>]

commit eb8cab670df420a7a32101360cfc7648cdd38d46
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Oct 22 18:53:36 2012 -0400

    notebook: add missing part for last commit
    
    For some reason, this got lost while rebasing.

 src/nautilus-notebook.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-notebook.c b/src/nautilus-notebook.c
index 90f00ef..458aacd 100644
--- a/src/nautilus-notebook.c
+++ b/src/nautilus-notebook.c
@@ -375,6 +375,7 @@ build_tab_label (NautilusNotebook *nb, NautilusWindowSlot *slot)
 	gtk_box_pack_start (GTK_BOX (hbox), close_button, FALSE, FALSE, 0);
 	gtk_widget_show (close_button);
 
+	g_object_set_data (G_OBJECT (hbox), "nautilus-notebook-tab", GINT_TO_POINTER (1));
 	nautilus_drag_slot_proxy_init (hbox, NULL, slot);
 
 	g_object_set_data (G_OBJECT (hbox), "label", label);