feat(client): add ClientServices::ValidDisconnect

src/client/ClientServices.cpp

@@ -422,6 +422,12 @@ int32_t ClientServices::SetSelectedRealmInfo(int32_t a1) {
     return 0;
 }
 
+int32_t ClientServices::ValidDisconnect(const void* client) {
+    STORM_ASSERT(client);
+
+    return client == ClientServices::Connection();
+}
+
 const char* ClientServices::GetLoginServer() {
     return ClientServices::s_loginObj->GetLoginServerType() == 1
         ? ClientServices::s_realmListBNVar->GetString()

src/client/ClientServices.hpp

@@ -49,6 +49,7 @@ class ClientServices : public LoginResponse {
         static void SetCharacterInfo(const CHARACTER_INFO* info);
         static void SetMessageHandler(NETMESSAGE msgId, MESSAGE_HANDLER handler, void* param);
         static int32_t SetSelectedRealmInfo(int32_t a1);
+        static int32_t ValidDisconnect(const void* client);
 
         // Virtual member functions
         virtual const char* GetLoginServer();