[DECNET]: Do not use lvalue in assignment.

net/decnet/af_decnet.c

@@ -456,7 +456,7 @@ struct sock *dn_alloc_sock(struct socket *sock, int gfp)
 	if  (!sk)
 		goto out;
 
-	DN_SK(sk) = scp = (struct dn_scp *)(sk + 1);
+	sk->sk_protinfo = scp = (struct dn_scp *)(sk + 1);
 
 	if (sock)
 		sock->ops = &dn_proto_ops;

net/decnet/dn_neigh.c

@@ -327,7 +327,7 @@ static int dn_phase3_output(struct sk_buff *skb)
 	}
 
 	data = skb_push(skb, sizeof(struct dn_short_packet) + 2);
-	((unsigned short *)data) = dn_htons(skb->len - 2);
+	data = (unsigned char *)dn_htons(skb->len - 2);
 	sp = (struct dn_short_packet *)(data + 2);
 
 	sp->msgflg   = DN_RT_PKT_SHORT|(cb->rt_flags&(DN_RT_F_RQR|DN_RT_F_RTS));