groupbaseexpiry and ovmethod_expiregroup

[Katsuhiro Kondou]

In article <200001242123.PAA29217 at darkside.norand.com>,
	Heath Kehoe <hakehoe at norand.com> wrote;

} With this change, if you have groupbaseexpiry off and are using
} non-self-expiring storage, overview data will never get removed, because
} neither of the if()s will ever evaluate to true for non-self-expiring
} tokens.

Oops.  I've forgot this case.

} It seems to me that the first if() should look like this instead:

This would do stat() for every article and might consume I/O.
The modification I did was to fix this, but it was incomplete.
I think it should check history wheather articles are still
retained for the case.
-- 
Katsuhiro Kondou