security: fix security_file_lock cmd argument

Pass posix-translated lock operations to security_file_lock
when invoked via sys_flock.

Signed-off-by: Sten Spans <Sten_Spans@genua.de>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/fs/locks.c b/fs/locks.c
index b6440f5..52366e8 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1591,7 +1591,7 @@
 	if (can_sleep)
 		lock->fl_flags |= FL_SLEEP;
 
-	error = security_file_lock(filp, cmd);
+	error = security_file_lock(filp, lock->fl_type);
 	if (error)
 		goto out_free;