rem: CHECK(*handle);
context: iptc_get_policy(const char *chain,		struct ipt_counters *counters,		iptc_handle_t *handle){	unsigned int start;	struct ipt_entry *e;	int hook;	CHECK(*handle);	hook = iptc_builtin(chain, *handle);	if (hook != 0)		start = (*handle)->info.hook_entry[hook-1];	else		return NULL;	e = get_entry(*handle, get_chain_end(*handle, start));	*counters = e->counters;	return target_name(*handle, e);}