current update failure due to extra files

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi,

on amd64 I did a build in src (after having upgraded tools and the new 
kernel) with:

 ./build.sh -O ../obj -T ../tools -U -x  distribution

and it fails with these postinstall fixes:

postinstall fixes passed: obsolete_stand
postinstall fixes failed:
   ===============================
checkflist ===> distrib/sets
cd /usr/src/distrib/sets && DESTDIR=/usr/src/../obj/destdir.amd64  
MACHINE=amd64 MACHINE_ARCH=x86_64  AWK=/usr/src/../tools/bin/nbawk 
CKSUM=/usr/src/../tools/bin/nbcksum  DB=/usr/src/../tools/bin/nbdb 
EGREP=grep\ -E  HOST_SH=/bin/sh  MAKE=/usr/src/../tools/bin/nbmake 
MKTEMP=/usr/src/../tools/bin/nbmktemp 
MTREE=/usr/src/../tools/bin/nbmtree PAX=/usr/src/../tools/bin/nbpax  
COMPRESS_PROGRAM=gzip  GZIP=-n 
PKG_CREATE=/usr/src/../tools/bin/nbpkg_create 
SED=/usr/src/../tools/bin/nbsed TSORT=/usr/src/../tools/bin/nbtsort\ -q  
/bin/sh /usr/src/distrib/sets/checkflist  -L base,x  -M 
/usr/src/../obj/destdir.amd64/METALOG.sanitised

=======  12 extra files in DESTDIR  =========
Files in DESTDIR but missing from flist.
File is obsolete or flist is out of date ?
------------------------------------------
./usr/lib/i386/libarchive.so.3
./usr/lib/i386/libarchive.so.3.1
./usr/lib/i386/libnetpgpverify.so.4
./usr/lib/i386/libnetpgpverify.so.4.0
./usr/lib/i386/libssh.so.29
./usr/lib/i386/libssh.so.29.0
./usr/lib/libarchive.so.3
./usr/lib/libarchive.so.3.1
./usr/lib/libnetpgpverify.so.4
./usr/lib/libnetpgpverify.so.4.0
./usr/lib/libssh.so.29
./usr/lib/libssh.so.29.0
=========  end of 12 extra files  ===========

Is that expected? should I perform something manually? I'm spoiled by 
the upgrades being always very smooth.

Riccardo