Watchdog function called with bad args

I encountered the situation described here: #893682: DBLog errors with certain user entries. Apparently this happens when messages without links appear in the logs. In my case, the "toxic" messages were generated by textimage.

In function textimage_build_image in textimage.module, watchdog is used like this:

watchdog('textimage', $message, WATCHDOG_ERROR);

That's the old Drupal 5 way of calling it. In D6 and D7 it should be something like this:

watchdog('textimage', $message, array(), WATCHDOG_ERROR);