fix bug windows sometimes don't work in Win7 (#9)

zhuzichu

2023-12-22 6dea61fb21756cb43ec1f065a4395410e60570e8

 src/quick/quickwindowagent.cpp

@@ -32,9 +32,7 @@
            return false;
        }

        if (!d->setup(window, new QuickItemDelegate())) {
            return false;
        }
        d->setup(window, new QuickItemDelegate());
        d->hostWindow = window;

#ifdef Q_OS_WINDOWS