unix.statfs.freebsd: add alien.c-types to using to future-proof
unix.statfs.freebsd: add alien.c-types to using to future-proof

kingcons/factor,erg/factor,cataska/factor,kingcons/factor,kingcons/factor,mcandre/factor,littledan/Factor,littledan/Factor,cataska/factor,mcandre/factor,cataska/factor,littledan/Factor,ceninan/factor,mcandre/factor,erg/factor,ceninan/factor,mcandre/factor,kingcons/factor,mcandre/factor,mcandre/factor,ceninan/factor,erg/factor,mcandre/factor,erg/factor,ceninan/factor,erg/factor,erg/factor,cataska/factor,erg/factor,littledan/Factor