Table row and column cache not dropped when leaving table

[jteh]

Str:

1. Move to the top of a simple table such as the info table for this ticket.
2. Press up arrow to move out of the table.
3. Press down arrow to enter the table again.

Expected:
Row 1 column 1 should be reported.

Actual:
No row and column is reported.

More info:
The last spoken row and column number are cached along with the table ID so that the row/column number isn't spoken if it hasn't changed. However, this cache isn't dropped when leaving the table, which is why this problem occurs; the last table ID< row and column number are the same, so no change is spoken. We somehow need to drop the cache when leaving the table.

[mdcurran]

Fixed in r3404. Seems this was implemented right at the start, though I mucked it up when adding code to handle tables with no column count.