nfsd4: move name-length checks to xdr

Again, these checks are better in the xdr code.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index c901214..4c8a7ec 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -317,8 +317,7 @@
 
 struct nfsd4_setclientid {
 	nfs4_verifier	se_verf;            /* request */
-	u32		se_namelen;         /* request */
-	char *		se_name;            /* request */
+	struct xdr_netobj se_name;
 	u32		se_callback_prog;   /* request */
 	u32		se_callback_netid_len;  /* request */
 	char *		se_callback_netid_val;  /* request */