When running a test transaction on a contribution page I kept winding up on the event page cancel screen

[eileenmcnaughton]

I was using the test contribution page with an incorrect visa for that page & getting rejected. However, I was winding up on the event cancel page (& getting odd cookie messages). I put in a fix that seemed to be working on the 4.3 version - & will pass it to you as a PR. Note that the rest of the if I altered is probably redundant now (but I played it safe)

[eileenmcnaughton]

Also, I think the parent class actually has a function for generating cancelURLs now I think about it - didn't check it

[eileenmcnaughton]

PRs against 2 * branches submitted - hope that's useful