buildworld 5-2-current cvsupped sun aug 15 13.00 gmt fails- field `fd_kqlist' has incomplete type

[mark rowlands]

cc -O -pipe -march=pentiumpro -DLIBC_SCCS -I/usr/src/lib/libkvm  -c
/usr/src/lib/libkvm/kvm.c
In file included from /usr/obj/usr/src/i386/usr/include/sys/proc.h:44,
                 from /usr/obj/usr/src/i386/usr/include/sys/user.h:47,
                 from /usr/src/lib/libkvm/kvm.c:48:
/usr/obj/usr/src/i386/usr/include/sys/filedesc.h:76: error: field
`fd_kqlist' has incomplete type
*** Error code 1

Stop in /usr/src/lib/libkvm.