When looking for some extra data to include in the hash, use the address of the dirhash, rather than the first sizeof(struct dirhash *) bytes of the structure (which, thankfully, seem to be constant).
When looking for some extra data to include in the hash, use the
address of the dirhash, rather than the first sizeof(struct dirhash
*) bytes of the structure (which, thankfully, seem to be constant).

Submitted by:	Ted Unangst <tedu@zeitbombe.org>
MFC after:	2 weeks

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