Fix a bug in handling archive members: when a member was not found

Fix a bug in handling archive members: when a member was not found
when looking into an already hashed archive, the code tried to use
the name shortened to the maximum length allowed for the archive.
Unfortunately it passed a buffer of junk to the hashing routine when
the name actually wasn't too long. Theoretically this could lead to
a false positive.

Date: 2005/02/21 08:06:34
Author: harti
Taken-from: FreeBSD