[orca/orca-xdesktop] Added a sanity check for linkBasename()

[Joanmarie Diggs <joanied src gnome org>]

commit d3d1e474481f43fbcc9aa77100b3603f1312794c
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sat Nov 19 15:39:47 2011 -0500

    Added a sanity check for linkBasename()

 src/orca/script_utilities.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 23a1a9c..3ea903d 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -1061,6 +1061,8 @@ class Utilities:
                 # What if there's not? See backwards.html.
                 #
                 uri = uri.split('://')[-1]
+                if not uri:
+                    return basename
 
                 # Get the last thing after all the /'s, unless it ends
                 # in a /.  If it ends in a /, we'll look to the stuff