Part of the fix for bgo#608150 - Firefox 3.6's changes to the hierarchy of tables needs to be handled by Orca
Part of the fix for bgo#608150 - Firefox 3.6's changes to the hierarchy of tables needs to be handled by Orca

One issue is that table rows can now appear as list items in the hierarchy.
getNextCellInfo was assuming the parent of the table cell would be a table.
This fix merely stops the traceback. Additional smarts will need to be
added to Orca's label guessing functionality.

h4ck3rm1k3/orca-sonar,h4ck3rm1k3/orca-sonar,GNOME/orca,chrys87/orca-beep,pvagner/orca,pvagner/orca,chrys87/orca-beep,pvagner/orca,chrys87/orca-beep,GNOME/orca,pvagner/orca,h4ck3rm1k3/orca-sonar,GNOME/orca,chrys87/orca-beep,GNOME/orca