message: Also handle MNAUTH on non-masternodes
  No real reason to ignore this message. It might become useful in the future.
diff: @@ -46,10 +46,6 @@ void CMNAuth::PushMNAUTH(CNode* pnode, CConnman& connman)
  void CMNAuth::ProcessMessage(CNode* pnode, const std::string& strCommand, CDataStream& vRecv, CConnman& connman)
  {
  - if (!fMasternodeMode) {
  - return;
  - }
  -
  if (!masternodeSync.IsBlockchainSynced()) {
  // we can't really verify MNAUTH messages when we don't have the latest MN list
  return;
  