Fixing WebSocket Close see Links2004#610

Author: Links2004

src/WebSocketsServer.cpp

@@ -914,7 +914,7 @@ void WebSocketsServer::begin(void) {
 }
 
 void WebSocketsServer::close(void) {
- WebSocketsServer::close();
+ WebSocketsServerCore::close();
 #if(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266)
  _server->close();
 #elif(WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP32) || (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)