[NETROM]: Use size_t for size in {send,recv}msg.

net/netrom/af_netrom.c

@@ -1010,7 +1010,7 @@ int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)
 }
 
 static int nr_sendmsg(struct kiocb *iocb, struct socket *sock,
-		      struct msghdr *msg, int len)
+		      struct msghdr *msg, size_t len)
 {
 	struct sock *sk = sock->sk;
 	nr_cb *nr = nr_sk(sk);
@@ -1119,11 +1119,11 @@ static int nr_sendmsg(struct kiocb *iocb, struct socket *sock,
 }
 
 static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
-		      struct msghdr *msg, int size, int flags)
+		      struct msghdr *msg, size_t size, int flags)
 {
 	struct sock *sk = sock->sk;
 	struct sockaddr_ax25 *sax = (struct sockaddr_ax25 *)msg->msg_name;
-	int copied;
+	size_t copied;
 	struct sk_buff *skb;
 	int er;