- * If now is not 0 then this will never actually do any I/O, or
- * change the fds that adns is using or the timeouts it wants. In any
- * case it won't block.
+ * If now is not 0 then this will never actually do any I/O, or change
+ * the fds that adns is using or the timeouts it wants. In any case
+ * it won't block, and it will set the timeout to zero if a query
+ * finishes in _beforeselect.