fstab: /etc/fstab:10: Inappropriate file type or format on RPI2

[bob prohaska]

Recently an RPI2 running 
FreeBSD 12.0-CURRENT #10 r312361: Wed Jan 18 00:06:38 PST 2017
    bob at www.zefox.com:/usr/obj/usr/src/sys/RPI2 arm
has started to report

fstab: /etc/fstab:10: Inappropriate file type or format

/etc/fstab contains

/dev/mmcsd0s1   /boot/msdos     msdosfs rw,noatime      0 0
/dev/mmcsd0s2a  /               ufs rw,noatime          1 1
#md             /tmp            mfs rw,noatime,-s50m    0 0
#md             /var/log        mfs rw,noatime,-s15m    0 0
#md             /var/tmp        mfs rw,noatime,-s5m     0 0
/dev/da0p4      /tmp            ufs rw,noatime          0 3
/dev/da0p3      /usr            ufs rw,noatime          1 2
/dev/da0p2      none            swap    sw                              0 0
/dev/da0p1      /var            ufs rw,noatime          0 4
proc            /procfs         rw                      0 0

where the offending line is the last one above.

I can't see what's wrong, could somebody please point it out?

Thanks for reading,

bob prohaska