Msg array offset for sequence number

Fixed bug where I was using the wrong offsets into the msg to find the epoch and sequence number.

udp_proxy.c

@@ -122,11 +122,11 @@ static int GetRecordSeq(const char* msg)
 {
  /* Only want to drop on Epoch 0. Only use the least
  * significant 32-bits of the sequence number. */
- if (msg[5] == 0 && msg[6] == 0)
- return (int)( msg[9] << 24 |
- msg[10] << 16 |
- msg[11] << 8 |
- msg[12]);
+ if (msg[3] == 0 && msg[4] == 0)
+ return (int)( msg[7] << 24 |
+ msg[8] << 16 |
+ msg[9] << 8 |
+ msg[10]);
 
  return 0;
 }