change the evaluation order of the rsvp socket in rsvp_input() in favor of the new-style per-vif socket.
change the evaluation order of the rsvp socket in rsvp_input()
in favor of the new-style per-vif socket.

this does not affect the behavior of the ISI rsvpd but allows
another rsvp implementation (e.g., KOM rsvp) to take advantage
of the new style for particular sockets while using the old style
for others.

in the future, rsvp supporn should be replaced by more generic
router-alert support.

PR:		kern/20984
Submitted by:	Martin Karsten <Martin.Karsten@KOM.tu-darmstadt.de>
Reviewed by:	kjc

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase