Crash in qwindows11style with null widget

qwindows11style crashes when drawing progress bar if qobject_cast fails.

I haven't debugged yet (end of my work day right now), but wanted to report in case the fix is obvious for you (should it just check the result of the qobject_cast?).

Here's the code:

    case QStyle::CE_ProgressBarGroove:{
        if (const QStyleOptionProgressBar* progbaropt = qstyleoption_cast<const QStyleOptionProgressBar*>(option)) {
            const QProgressBar bar = qobject_cast<const QProgressBar*>(widget);*
            QRectF rect = subElementRect(SE_ProgressBarContents, progbaropt, widget);
            QPointF center = rect.center();
            if (bar->orientation() & Qt::Horizontal)

{                 rect.setHeight(1);                 rect.moveTop(center.y());             }

else

{                 rect.setWidth(1);                 rect.moveLeft(center.x());             }

(from qwindows11style.cpp)

If widget isn't a QProgressBar* then the cast fails and a crash results.

Update: initial value of widget is nullptr (from initiating call of QStyle::drawControl using default value for widget parameter), rather than being the wrong type. In any case, adding a null check for "bar" will avoid the crash.