exit on select return -1 but errno == 0?

[Joe Maimon]

in radiusd.c:720

-----------------------------
   for (listener = mainconfig.listen;
                              listener != NULL;
                              listener = listener->next) {
                                 int next;

                                 next = listener->update(listener, 
time_now);
                                 if (next > 0 && next < sleep_time) {
                                         sleep_time = next;
                                 }


-------------------------------

I added the "next > 0 &&" because I was getting "sleeping for -1".... 
and then the server would exit.