[at-spi2-core] Fix a crash introduced in last commit

[Mike Gorse <mgorse src gnome org>]

commit bae12236d35ba6da1506a4c33094cd6b91d38e22
Author: Mike Gorse <mgorse novell com>
Date:   Mon Apr 18 11:33:51 2011 -0500

    Fix a crash introduced in last commit

 atspi/atspi-accessible.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/atspi/atspi-accessible.c b/atspi/atspi-accessible.c
index 86f47d8..9f01868 100644
--- a/atspi/atspi-accessible.c
+++ b/atspi/atspi-accessible.c
@@ -719,7 +719,7 @@ atspi_accessible_get_application (AtspiAccessible *obj, GError **error)
   for (;;)
   {
     parent = atspi_accessible_get_parent (obj, NULL);
-    if (!parent &&
+    if (!parent && obj->parent.app &&
         atspi_accessible_get_role (obj, NULL) != ATSPI_ROLE_APPLICATION)
     {
       AtspiAccessible *root = g_object_ref (obj->parent.app->root);