[gtk+] a11y: fix private strict regression

[Cosimo Cecchi <cosimoc src gnome org>]

commit 92085887711eb5a2598d6bd2f0b15b5a70b6438e
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Oct 15 17:09:04 2012 -0400

    a11y: fix private strict regression
    
    Commit 0bbfcc249191026a1ee822545398ec6e5e36f7f4 added a private struct
    for GtkImageAccessible, but forgot to call g_type_class_add_private().

 gtk/a11y/gtkimageaccessible.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/a11y/gtkimageaccessible.c b/gtk/a11y/gtkimageaccessible.c
index 14dffa3..48fa331 100644
--- a/gtk/a11y/gtkimageaccessible.c
+++ b/gtk/a11y/gtkimageaccessible.c
@@ -99,6 +99,8 @@ _gtk_image_accessible_class_init (GtkImageAccessibleClass *klass)
   gobject_class->finalize = gtk_image_accessible_finalize;
   class->initialize = gtk_image_accessible_initialize;
   class->get_name = gtk_image_accessible_get_name;
+
+  g_type_class_add_private (klass, sizeof (GtkImageAccessiblePrivate));
 }
 
 static void