[clutter-gtk] embed: unmap: check stage exists before unmapping

[Emmanuele Bassi <ebassi src gnome org>]

commit 0ec642a24c25742167d42dd6552c12b8923ea4bc
Author: Raluca Elena Podiuc <ralucaelena1985 gmail com>
Date:   Sun Jun 26 18:56:09 2011 +0200

    embed: unmap: check stage exists before unmapping
    
    https://bugzilla.gnome.org/show_bug.cgi?id=653435

 clutter-gtk/gtk-clutter-embed.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/clutter-gtk/gtk-clutter-embed.c b/clutter-gtk/gtk-clutter-embed.c
index f98a0e7..9eaa0a8 100644
--- a/clutter-gtk/gtk-clutter-embed.c
+++ b/clutter-gtk/gtk-clutter-embed.c
@@ -369,7 +369,10 @@ gtk_clutter_embed_unmap (GtkWidget *widget)
 {
   GtkClutterEmbedPrivate *priv = GTK_CLUTTER_EMBED (widget)->priv;
 
-  clutter_actor_unmap (priv->stage);
+  /* gtk may emit an unmap signal after dispose, so it's possible we may
+   * have already disposed priv->stage. */
+  if (priv->stage != NULL)
+    clutter_actor_unmap (priv->stage);
 
   GTK_WIDGET_CLASS (gtk_clutter_embed_parent_class)->unmap (widget);
 }