audio/logitechmediaserver: update 7.9.1.g2018.04.23 -> 7.9.2.g2018.12.10

• unbreak after perl update

PR: 234037
Submitted by: Mark Dixon <mark@tranquillussoftware.co.uk> (maintainer)
Relnotes: https://github.com/Logitech/slimserver/blob/public/7.9/Changelog7.html
Differential Revision: https://reviews.freebsd.org/D18571