[orca] When Gecko reports the end offset is -1, use the characterCount instead

[Joanmarie Diggs <joanied src gnome org>]

commit e74bb21c97ac4e54e54a62588a795b6b6f01e529
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sun Jan 6 11:35:17 2013 -0500

    When Gecko reports the end offset is -1, use the characterCount instead

 .../scripts/toolkits/Gecko/script_utilities.py     |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/scripts/toolkits/Gecko/script_utilities.py b/src/orca/scripts/toolkits/Gecko/script_utilities.py
index 4559c36..5492ab2 100644
--- a/src/orca/scripts/toolkits/Gecko/script_utilities.py
+++ b/src/orca/scripts/toolkits/Gecko/script_utilities.py
@@ -533,6 +533,8 @@ class Utilities(script_utilities.Utilities):
             if boundary:
                 [string, start, end] = \
                     text.getTextAfterOffset(offset, boundary)
+                if end == -1:
+                    end = text.characterCount
             else:
                 start = offset
                 end = text.characterCount