commit fix for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270900

[Graham Menhennitt]

Could somebody please commit the one line fix for 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270900. I've tested it 
on both 13.3 and 14.1 and it fixes the USB pass-though problem on both 
of them.

Thanks in advance,
    Graham