[gtk+/gtk-3-4] a11y: fix a typo leading to a crash

[Matthias Clasen <matthiasc src gnome org>]

commit 24ccf3e35d14373c310e62d313d28380ea015dd5
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Jun 6 09:22:29 2012 -0400

    a11y: fix a typo leading to a crash
    
    text can't be NULL here, or we would have failed way earlier.
    The original code from gail returned if the renderer text was NULL, and
    we have to do that, or we'll end up calling e.g.
    g_utf8_offset_to_pointer() on a NULL pointer.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=827930
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677551

 gtk/a11y/gtktextcellaccessible.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/gtk/a11y/gtktextcellaccessible.c b/gtk/a11y/gtktextcellaccessible.c
index dbc9978..cf24b49 100644
--- a/gtk/a11y/gtktextcellaccessible.c
+++ b/gtk/a11y/gtktextcellaccessible.c
@@ -542,11 +542,8 @@ gtk_text_cell_accessible_get_character_extents (AtkText      *text,
   gtk_renderer = GTK_CELL_RENDERER_TEXT (gail_renderer->renderer);
 
   g_object_get (gtk_renderer, "text", &renderer_text, NULL);
-  if (text == NULL)
-    {
-      g_free (renderer_text);
-      return;
-    }
+  if (renderer_text == NULL)
+    return;
 
   parent = atk_object_get_parent (ATK_OBJECT (text));
   if (GTK_IS_CONTAINER_CELL_ACCESSIBLE (parent))