It was grabbing a QLabel without accounting for the size of
the window in the case where the DPI is larger than 1:
FAIL! : tst_QWidget::translucentWidget() Compared values are not the same
Actual (actual.size()) : QSize(32x32)
Expected (expected.size()): QSize(16x16)
Change-Id: I4873f3c6364ee2696f5612d91e6c97c60b2cd915
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>