[IPV6]: Remove redundant length check on input
We don't need to check skb->len when we're just about to call pskb_may_pull since that checks it for us. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Acked-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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