bug in unwanted newsgroup reporting

[Katsuhiro Kondou]

In article <200005190152.SAA00732 at salsa.gv.tsc.tdk.com>,
	Don Lewis <Don.Lewis at tsc.tdk.com> wrote;

} Changing this would mess up the unwanted newsgroup reporting, since an
} articles crossposted to N groups could potentially result in N factorial
} variations in the unwanted newsgroup report.

Just fixed.  Thanks.
-- 
Katsuhiro Kondou