ShapeLayout's getNextPoint can cause infinite loops in certain circumstances

[joelhooks]

            var pt : Point;

    do {
        pt = new Point();
        pt.x = (Math.random() * _rect.width) + _rect.x;
        pt.y = (Math.random() * _rect.height) + _rect.y;

        if (!_target.hitTestPoint(pt.x, pt.y, true)) {
            pt = null;
        }
    } while (pt == null);


    return pt;
}```

If the ShapeLayout's layout object has been added to another container that hasn't been added to the stage the above do-while loop can never escape.