Add missing FreeBSD SAs
Security: FreeBSD-SA-19:24.mqueuefs
Security: FreeBSD-SA-19:23.midi
Security: FreeBSD-SA-19:22.mbuf
Security: FreeBSD-SA-19:21.bhyve
Security: FreeBSD-SA-19:20.bsnmp
Security: FreeBSD-SA-19:19.mldv2
Security: FreeBSD-SA-19:18.bzip2