improve readability

Zhao Yuhang

2023-12-17 61f65f23ffee628344fb9ebb0f71e1d7c480976b

 src/widgets/widgetwindowagent_mac.cpp

@@ -40,14 +40,15 @@

    void WidgetWindowAgent::setSystemButtonArea(QWidget *widget) {
        Q_D(WidgetWindowAgent);
        auto ctx = d->context.get();
        d->systemButtonAreaWidget = widget;
        if (!widget) {
            systemButtonAreaWidgetEventFilter.reset();
            d->context->setSystemButtonArea({});
            d->systemButtonAreaWidgetEventFilter.reset();
            ctx->setSystemButtonArea({});
            return;
        }
        systemButtonAreaWidgetEventFilter =
            std::make_unique<SystemButtonAreaWidgetEventFilter>(widget, d->context);
        d->systemButtonAreaWidgetEventFilter =
            std::make_unique<SystemButtonAreaWidgetEventFilter>(widget, ctx);
    }

}