Address comments made after initial dissector was submitted.
Change-Id: Ic42431d8af1d281dbe6f67a8f3f4d5e0aeea4156
Reviewed-on: https://code.wireshark.org/review/7995
Reviewed-by: Michael Mann <mmann78@netscape.net>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>