Use F_SETLK instead of F_SETLK64 in nfs locking code.

The code doesn't actually _care_ about 32/64-bit issues,
only about F_SETLK vs F_SETLKW, and the F_SETLK64 doesn't
exist except as a compatibility thing on 64-bit architectures
(since the regular one already _is_ 64-bit, of course).

fs/nfs/nfs4proc.c

@@ -2510,7 +2510,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *r
 
 int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
 {
-	return _nfs4_do_setlk(state, F_SETLK64, request, 1);
+	return _nfs4_do_setlk(state, F_SETLK, request, 1);
 }
 
 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)