Add: maximum number of companies allowed to the client list

src/network/network_client.cpp

@@ -1111,6 +1111,7 @@ NetworkRecvStatus ClientNetworkGameSocketHandler::Receive_SERVER_CONFIG_UPDATE(P
 
 	_network_server_max_companies = p->Recv_uint8();
 	_network_server_name = p->Recv_string(NETWORK_NAME_LENGTH);
+	SetWindowClassesDirty(WC_CLIENT_LIST);
 
 	return NETWORK_RECV_STATUS_OKAY;
 }
@@ -1319,11 +1320,20 @@ bool NetworkClientPreferTeamChat(const NetworkClientInfo *cio)
 	return false;
 }
 
+/**
+ * Get the maximum number of companies that are allowed by the server.
+ * @return The number of companies allowed.
+ */
+uint NetworkMaxCompaniesAllowed()
+{
+	return _network_server ? _settings_client.network.max_companies : _network_server_max_companies;
+}
+
 /**
  * Check if max_companies has been reached on the server (local check only).
  * @return true if the max value has been reached or exceeded, false otherwise.
  */
 bool NetworkMaxCompaniesReached()
 {
-	return Company::GetNumItems() >= (_network_server ? _settings_client.network.max_companies : _network_server_max_companies);
+	return Company::GetNumItems() >= NetworkMaxCompaniesAllowed();
 }