Make it compile here too

src/month/monthgraphicsitems.cpp

@@ -205,8 +205,8 @@ QPainterPath MonthGraphicsItem::widgetPath(bool border) const
 QRectF MonthGraphicsItem::boundingRect() const
 {
     // width - 2 because of the cell-dividing line with width == 1 at beginning and end
-    return {0, 0, (daySpan() + 1) * mMonthItem->monthScene()->columnWidth() - 2,
-                  mMonthItem->monthScene()->itemHeight()};
+    return QRectF(0, 0, (daySpan() + 1) * mMonthItem->monthScene()->columnWidth() - 2,
+                  mMonthItem->monthScene()->itemHeight());
 }
 
 void MonthGraphicsItem::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *)