Replace pinfo->circuit_id will passing data through functions.

Change-Id: I5b35ad57c5c40a1393cbc174384b8a275abd763c
Reviewed-on: https://code.wireshark.org/review/4903
Reviewed-by: Michael Mann <mmann78@netscape.net>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Anders Broman <a.broman58@gmail.com>