if (NULL != h->destroy_task)
GNUNET_SCHEDULER_cancel (h->destroy_task);
h->destroy_task = GNUNET_SCHEDULER_add_now (&do_destroy,
if (NULL != h->destroy_task)
GNUNET_SCHEDULER_cancel (h->destroy_task);
h->destroy_task = GNUNET_SCHEDULER_add_now (&do_destroy,