rem: if (relay_command[0] == 0)
add: if (relay_command == 0)
context: static void catch_alarm(int ignored){  if (relay_command[0] == 0)    return;  /* Run the relay-ctrl process, and then set it up to re-run */  fprintf(stderr, "%s: Running relay-ctrl-allow\n", program);  run_relay_ctrl();  signal(SIGALRM, catch_alarm);  alarm(relay_rerun_delay);}