IPv6: use ipv6_addr_set_v4mapped()

Might as well use the ipv6_addr_set_v4mapped() inline we created last
year.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 117f68a..f4c7ff3 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -686,8 +686,7 @@
 	case AF_INET:
 		sin = svc_addr_in(rqstp);
 		sin6 = &sin6_storage;
-		ipv6_addr_set(&sin6->sin6_addr, 0, 0,
-				htonl(0x0000FFFF), sin->sin_addr.s_addr);
+		ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &sin6->sin6_addr);
 		break;
 	case AF_INET6:
 		sin6 = svc_addr_in6(rqstp);