WebsocketClient: fix potential crash

src/utils/WebsocketClient.cpp

@@ -117,3 +117,9 @@ void WebsocketClient::onbinaryMessageReceived(const QByteArray &message) {
 
     emit WSMessage(object);
 }
+
+WebsocketClient::~WebsocketClient() {
+    // webSocket may fire QWebSocket::disconnected after WebsocketClient is destroyed
+    // explicitly disconnect to prevent crash
+    webSocket.disconnect();
+}

src/utils/WebsocketClient.h

@@ -15,6 +15,7 @@ class WebsocketClient : public QObject {
 
 public:
     explicit WebsocketClient(QObject *parent = nullptr);
+    ~WebsocketClient() override;
     void start();
     void restart();
     void stop();