[gtk+] Assistant: Fix page rmoval

[Matthias Clasen <matthiasc src gnome org>]

commit 32de7edf1dec5528b8d02cb765b2c76471f321c6
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Oct 29 19:21:47 2015 -0400

    Assistant: Fix page rmoval
    
    We have to remove the page itself from the intermediate box
    first, before removing the box from the notebook. Otherwise,
    reffing the page to keep it alive is ineffective: the box
    gets destroyed, and that destruction recurses over the page.
    
    This fixes the problem in
    https://bugzilla.gnome.org/show_bug.cgi?id=756385

 gtk/gtkassistant.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index b1d400d..8813b4b 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -1472,8 +1472,8 @@ gtk_assistant_remove (GtkContainer *container,
       assistant->priv->content != NULL &&
       gtk_widget_get_parent (box) == assistant->priv->content)
     {
-      container = (GtkContainer *) assistant->priv->content;
-      gtk_container_remove (container, box);
+      gtk_container_remove (GTK_CONTAINER (box), page);
+      gtk_container_remove (GTK_CONTAINER (assistant->priv->content), box);
     }
 }