Jasig/cas — pull request #764 by serac (2014-11-14 19:09:50+00:00)
Title: Fix #763: validate ticket before proxy callback attempt.

Trivial patch that simply reorders service component calls to perform ticket validation (`validateServiceTicket`) before proxy callback attempt (`delegateTicketGrantingTicket`). I have tested this on a live CAS server and it performs as expected.