[gtk+] Do not return NULL AtkStateSet

[Matthias Clasen <matthiasc src gnome org>]

commit 5611cf209678b230bf69380d3f5a80b73039a027
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Sat Feb 28 08:59:12 2015 -0500

    Do not return NULL AtkStateSet
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741511

 gtk/a11y/gtktextviewaccessible.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/gtk/a11y/gtktextviewaccessible.c b/gtk/a11y/gtktextviewaccessible.c
index 7839d2e..d2f17e6 100644
--- a/gtk/a11y/gtktextviewaccessible.c
+++ b/gtk/a11y/gtktextviewaccessible.c
@@ -97,11 +97,14 @@ gtk_text_view_accessible_ref_state_set (AtkObject *accessible)
   AtkStateSet *state_set;
   GtkWidget *widget;
 
+  state_set = ATK_OBJECT_CLASS (gtk_text_view_accessible_parent_class)->ref_state_set (accessible);
+
   widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible));
   if (widget == NULL)
-    return NULL;
-
-  state_set = ATK_OBJECT_CLASS (gtk_text_view_accessible_parent_class)->ref_state_set (accessible);
+    {
+      atk_state_set_add_state (state_set, ATK_STATE_DEFUNCT);
+      return state_set;
+    }
 
   if (gtk_text_view_get_editable (GTK_TEXT_VIEW (widget)))
     atk_state_set_add_state (state_set, ATK_STATE_EDITABLE);