NFSv4: Fix another nfs4_sequence corruptor

nfs4_release_lockowner needs to set the rpc_message reply to point to
the nfs4_sequence_res in order to avoid another Oopsable situation
in nfs41_assign_slot.

Fixes: fbd4bfd1d9d21 (NFS: Add nfs4_sequence calls for RELEASE_LOCKOWNER)
Cc: stable@vger.kernel.org # 3.12+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index b2fb167..5624e4e 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -467,9 +467,14 @@
 };
 
 struct nfs_release_lockowner_args {
+	struct nfs4_sequence_args	seq_args;
 	struct nfs_lowner	lock_owner;
 };
 
+struct nfs_release_lockowner_res {
+	struct nfs4_sequence_res	seq_res;
+};
+
 struct nfs4_delegreturnargs {
 	struct nfs4_sequence_args	seq_args;
 	const struct nfs_fh *fhandle;