message: Switch nPrevNodeCount to vNodesSize.
  These both have the same value, but the variable naming is confusing.
diff: @@ -1227,7 +1227,7 @@ void CConnman::ThreadSocketHandler()
  if(vNodesSize != nPrevNodeCount) {
  nPrevNodeCount = vNodesSize;
  if(clientInterface)
  - clientInterface->NotifyNumConnectionsChanged(nPrevNodeCount);
  + clientInterface->NotifyNumConnectionsChanged(vNodesSize);
  }
  //
  