* 2. Move the event class reference to our `event_class`
* variable so that we can set the event's class member
* to NULL before recycling it. We CANNOT do this after
- * we put the event class reference because this bt_put()
+ * we put the event class reference because this bt_object_put_ref()
* could destroy the event class, also destroying its
* event pool, thus also destroying our event object (this
* would result in an invalid write access).