server/request.c:1623: error: UNINITIALIZED_VALUE
  The value read from res was never initialized.

server/request.c:1623:32: 
1621.     }
1622. 
1623.     if (next_filter == NULL || res != OK) {
                                     ^
1624.         if ((res = ap_process_request_internal(rnew))) {
1625.             rnew->status = res;
