NFS: suppress a build warning

struct sockaddr_storage * can safely be used as struct sockaddr *.
Suppress an "incompatible pointer type" warning.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/nfs/super.c

@@ -1848,8 +1848,8 @@ nfs_compare_remount_data(struct nfs_server *nfss,
 	    data->timeo != (10U * nfss->client->cl_timeout->to_initval / HZ) ||
 	    data->nfs_server.port != nfss->port ||
 	    data->nfs_server.addrlen != nfss->nfs_client->cl_addrlen ||
-	    !rpc_cmp_addr(&data->nfs_server.address,
-		    &nfss->nfs_client->cl_addr))
+	    !rpc_cmp_addr((struct sockaddr *)&data->nfs_server.address,
+			  (struct sockaddr *)&nfss->nfs_client->cl_addr))
 		return -EINVAL;
 
 	return 0;