ipv6: constify rt6_nexthop()
There is no functional change in this patch, it only prepares the next one. rt6_nexthop() will be used by ip6_dst_lookup_neigh(), which uses const variables. Signed-off-by:Nicolas Dichtel <nicolas.dichtel@6wind.com> Reported-by:
kbuild test robot <lkp@intel.com> Acked-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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