ocfs2: remove unused handle argument from ocfs2_meta_lock_full()

Now that this is unused and all callers pass NULL, we can safely remove it.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index fb91089..06be6e7 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -100,7 +100,7 @@
 	mlog(0, "find parent of directory %llu\n",
 	     (unsigned long long)OCFS2_I(dir)->ip_blkno);
 
-	status = ocfs2_meta_lock(dir, NULL, NULL, 0);
+	status = ocfs2_meta_lock(dir, NULL, 0);
 	if (status < 0) {
 		if (status != -ENOENT)
 			mlog_errno(status);