Jewel: PopUpView.as exception

[Maria Jose Esteve]

Hi,
In the PopUpView.as class, we use popUpVisible property to change his 
visibility.
To display his content, we use the "setTimeout" function, which executes the 
prepareForPopUp function after 300 milliseconds:

setTimeout(prepareForPopUp,  300);

If you show and hide in a short time frame, the prepareForPopUp event fires 
after the value of the _popUp variable has been set to NULL causing exception:

TypeError: Cannot read property 'addClass' of null

Would it be correct to verify the _PopUp value before calling it? ... Something 
like

        private function prepareForPopUp():void
        {
+            if (_popUp)
+                _popUp.addClass("open");

            COMPILE::JS
            {
                //avoid scroll in html
                document.body.classList.add("viewport");
                //cancelAnimationFrame(rq);
            }
        }


Thank you,
Hiedra.