station_schedule_update_5200 references undefined function db_next_id()

In station/schedule/station_schedule.install, lines 273 and 274 call the db_next_id function. As I understand, the db_next_id function is excluded from the drupal 6 branch.

When running update.php, I am presented with the following error message:
An error occurred. http://wwoz/update.php?id=6&op=do <br /> <b>Fatal error</b>: Call to undefined function db_next_id() in <b>/path/to/site/sites/all/modules/station/schedule/station_schedule.install</b> on line <b>273</b><br />

Is there any way to get around this?