[orca] Fix structural navigation for tables in LibreOffice Writer

[Joanmarie Diggs <joanied src gnome org>]

commit 935a6b331ee664e3a30c52ec2dbdc8ea94c7d952
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Oct 16 09:59:59 2013 -0400

    Fix structural navigation for tables in LibreOffice Writer

 .../scripts/apps/soffice/structural_navigation.py  |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)
---
diff --git a/src/orca/scripts/apps/soffice/structural_navigation.py 
b/src/orca/scripts/apps/soffice/structural_navigation.py
index 6af23b4..8e9a697 100644
--- a/src/orca/scripts/apps/soffice/structural_navigation.py
+++ b/src/orca/scripts/apps/soffice/structural_navigation.py
@@ -68,15 +68,17 @@ class StructuralNavigation(structural_navigation.StructuralNavigation):
         except:
             return False
 
+        parent = hash(obj.parent)
+
         # Make sure we're in the correct table first.
         #
-        if not (table in self._script.dynamicRowHeaders or
-                table in self._script.dynamicColumnHeaders):
+        if not (parent in self._script.dynamicRowHeaders or
+                parent in self._script.dynamicColumnHeaders):
             return False
 
         [row, col] = self.getCellCoordinates(obj)
-        return (row == self._script.dynamicColumnHeaders.get(table) \
-                or col == self._script.dynamicRowHeaders.get(table))
+        return (row == self._script.dynamicColumnHeaders.get(parent) \
+                or col == self._script.dynamicRowHeaders.get(parent))
 
     def _tableCellPresentation(self, cell, arg):
         """Presents the table cell or indicates that one was not found.