add missing func

Source/Core/Core/NetPlayClient.cpp

@@ -1069,6 +1069,24 @@ void NetPlayClient::OnPlayerPingData(sf::Packet& packet)
   m_dialog->Update();
 }
 
+void NetPlayClient::OnSendCodesMsg(sf::Packet& packet)
+{
+  std::string codeStr;
+  packet >> codeStr;
+  auto ss = std::stringstream{codeStr};
+
+  v_ActiveGeckoCodes = {};
+  for (std::string line; std::getline(ss, line, '\n');)
+    v_ActiveGeckoCodes.push_back(line);
+
+  // add to chat
+  std::string firstLine = "Active Gecko Codes:";
+  m_dialog->OnActiveGeckoCodes(firstLine);
+  for (const std::string code : v_ActiveGeckoCodes)
+    m_dialog->OnActiveGeckoCodes(code);
+}
+
+
 void NetPlayClient::OnDesyncDetected(sf::Packet& packet)
 {
   int pid_to_blame;

Source/Core/Core/NetPlayClient.h

@@ -354,6 +354,8 @@ private:
   void OnGameDigestResult(sf::Packet& packet);
   void OnGameDigestError(sf::Packet& packet);
   void OnGameDigestAbort();
+  void OnSendCodesMsg(sf::Packet& packet);
+
 
   bool m_is_connected = false;
   ConnectionState m_connection_state = ConnectionState::Failure;