add: return 0;
context: static void dump_next_thread_in_q(int argc, char **argv){	struct thread *t = last_thread_dumped;	if(t == NULL) {		dprintf("no thread previously dumped. Examine a thread first.\n");		return;	}	dprintf("next thread in queue after thread @ %p\n", t);	if(t->q_next != NULL) {		_dump_thread_info(t->q_next);	} else {		dprintf("NULL\n");	}}