[gnome-shell] st-widget: Avoid passing NULL to atk_object_get_role()

[Rui Matos <rtcm src gnome org>]

commit c25c143b245a5ee63656bec75e04a7829b3dd54c
Author: Rui Matos <tiagomatos gmail com>
Date:   Thu Jan 21 16:44:18 2016 +0100

    st-widget: Avoid passing NULL to atk_object_get_role()
    
    This never worked since the code landed but apparently no-one noticed
    until now.
    
    The intent here is to return the accessible's default role if none has
    been explicitly set on the StWidget instance.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760945

 src/st/st-widget.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/st/st-widget.c b/src/st/st-widget.c
index 0f1a34e..e20c845 100644
--- a/src/st/st-widget.c
+++ b/src/st/st-widget.c
@@ -2420,7 +2420,6 @@ AtkRole
 st_widget_get_accessible_role (StWidget *widget)
 {
   StWidgetPrivate *priv;
-  AtkObject *accessible = NULL;
   AtkRole role = ATK_ROLE_INVALID;
 
   g_return_val_if_fail (ST_IS_WIDGET (widget), ATK_ROLE_INVALID);
@@ -2430,7 +2429,7 @@ st_widget_get_accessible_role (StWidget *widget)
   if (priv->accessible_role != ATK_ROLE_INVALID)
     role = priv->accessible_role;
   else if (priv->accessible != NULL)
-    role = atk_object_get_role (accessible);
+    role = atk_object_get_role (priv->accessible);
 
   return role;
 }