scsi: replace obsolete NLMSG_* with type safe nlmsg_*

Signed-off-by: Hong Zhiguo <honkiko@gmail.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/scsi/scsi_netlink.c b/drivers/scsi/scsi_netlink.c
index 65123a2..fe30ea9 100644
--- a/drivers/scsi/scsi_netlink.c
+++ b/drivers/scsi/scsi_netlink.c
@@ -50,7 +50,7 @@
 	u32 rlen;
 	int err, tport;
 
-	while (skb->len >= NLMSG_SPACE(0)) {
+	while (skb->len >= NLMSG_HDRLEN) {
 		err = 0;
 
 		nlh = nlmsg_hdr(skb);
@@ -70,7 +70,7 @@
 			goto next_msg;
 		}
 
-		hdr = NLMSG_DATA(nlh);
+		hdr = nlmsg_data(nlh);
 		if ((hdr->version != SCSI_NL_VERSION) ||
 		    (hdr->magic != SCSI_NL_MAGIC)) {
 			err = -EPROTOTYPE;