Avoid showing the sending rate in bytes per second if no sent bytes have been

recorded. This applies during a TCP connect scan, where we have a count of
packets sent but not of bytes (which we cannot measure, and will vary from
platform to platform).

timing.cc

@@ -307,6 +307,14 @@ double RateMeter::getCurrentByteRate(const struct timeval *now, bool update) {
   return current_byte_rate;
 }
 
+unsigned long long RateMeter::getNumPackets(void) const {
+  return num_packets;
+}
+
+unsigned long long RateMeter::getNumBytes(void) const {
+  return num_bytes;
+}
+
 /* Update the rates to include packets additional packets and bytes additional
    bytes. If now is not NULL, use it as the time the packets and bytes were
    received rather than calling gettimeofday. */