tst_QWidget::windowMoveResize(): Fix QEXPECT_FAIL / QTRY_COMPARE .

QEXPECT_FAIL followed by QTRY_COMPARE considerably slows down
tests due to the check timing out.

Task-number: QTBUG-38890
Change-Id: I7f90f2627fc6ce149d159a6d13355ca1a8181d54
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>