Users can register for a past event

When accessing civicrm/event/register for an event whose end date is in the past users should always be redirected to event/info with status message "Registration is closed for this event."

Currently, this happens if the user is logged in AND has previously registered for the event (you get 2 status messages). However, anonymous users can still register.

NOTE: If current date is past Registration End Date, then things work properly and all users are redirected to event/info w/ appropriate status message.