net: in the first call to neigh_seq_next, call neigh_get_first, not neigh_get_idx.

neigh_seq_next won't be called both with *pos > 0 && v ==
SEQ_START_TOKEN, so there's no point calling neigh_get_idx when we're
on the start token, just call neigh_get_first directly.
Signed-off-by: Chris Larson <clarson@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/neighbour.c

@@ -2385,7 +2385,7 @@ void *neigh_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 	void *rc;
 
 	if (v == SEQ_START_TOKEN) {
-		rc = neigh_get_idx(seq, pos);
+		rc = neigh_get_first(seq);
 		goto out;
 	}