add: return True;
context: void msleep(int t){	int tdiff=0;	struct timeval tval,t1,t2;  	gettimeofday(&t1, NULL);	gettimeofday(&t2, NULL);  	while (tdiff < t) {		tval.tv_sec = (t-tdiff)/1000;		tval.tv_usec = 1000*((t-tdiff)%1000); 		errno = 0;		select(0,NULL,NULL, NULL, &tval);		gettimeofday(&t2, NULL);		tdiff = (t2.tv_sec - t1.tv_sec)*1000 + 			(t2.tv_usec - t1.tv_usec)/1000;	}}