update pointer usage

Yuhang Zhao

2023-12-06 0287f19b3eabf6b6632d51c0288e6cf0be2c5e69

 src/quick/quickwindowagent_p.h

@@ -15,7 +15,7 @@
        void init();

        // Host
        QQuickWindow *host{};
        QQuickWindow *hostWindow{};
    };

}