[gtk+] notebook: On drag window hide, fix css nodes

[Benjamin Otte <otte src gnome org>]

commit 6cf7c03334826fa14d808fee6b1f1618d80687db
Author: Benjamin Otte <otte redhat com>
Date:   Thu Oct 22 20:29:10 2015 +0200

    notebook: On drag window hide, fix css nodes

 gtk/gtknotebook.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index cc3b29f..1cf39fb 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -3091,6 +3091,7 @@ hide_drag_window (GtkNotebook        *notebook,
       else
         gtk_widget_unparent (page->tab_label);
 
+      gtk_css_node_set_parent (gtk_widget_get_css_node (page->tab_label), page->cssnode);
       gtk_widget_set_parent (page->tab_label, widget);
       g_object_unref (page->tab_label);
     }