Bug in GtkInvisible

[Federico Mena Quintero <federico nuclecu unam mx>]

GtkInvisible has this:

	struct _GtkInvisible
	{
	  GtkBin bin;
	};
	
	struct _GtkInvisibleClass
	{
	  GtkBinClass parent_class;
	};

But it also has this in gtk_invisible_get_type():

	invisible_type = gtk_type_unique (GTK_TYPE_WIDGET, &invisible_info);

which is obviously wrong :-)

  Federico