ipv6_addr_hash doesn't do what it's comment says.  The comment was
probably what was intended, not that it'll make much difference in
practice.
Signed-off-by: Ralph Loader <suckfish@ihug.co.nz>
Signed-off-by: Yoshifuji Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@redhat.com>