[orca] Sanity check for broken LibreOffice hierarchy

[Joanmarie Diggs <joanied src gnome org>]

commit 0e98ec11e88f12d5bcb7f83ce02d15207a0fcf7a
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Apr 4 17:10:06 2012 -0400

    Sanity check for broken LibreOffice hierarchy

 src/orca/scripts/apps/soffice/script.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/scripts/apps/soffice/script.py b/src/orca/scripts/apps/soffice/script.py
index 729a6ff..a1bc773 100644
--- a/src/orca/scripts/apps/soffice/script.py
+++ b/src/orca/scripts/apps/soffice/script.py
@@ -1904,7 +1904,7 @@ class Script(default.Script):
                 return
 
         parent = event.source.parent
-        if parent.getRole() == pyatspi.ROLE_EXTENDED:
+        if parent and parent.getRole() == pyatspi.ROLE_EXTENDED:
             if parent.getRoleName() == 'text frame':
                 return