message: net: Avoid UBSan warning in ProcessMessage(...)
diff: @@ -2500,6 +2500,9 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
  bool fRelay = true;
  vRecv >> nVersion >> nServiceInt >> nTime >> addrMe;
  + if (nTime < 0) {
  + nTime = 0;
  + }
  nServices = ServiceFlags(nServiceInt);
  if (!pfrom.IsInboundConn())
  {
  