ocfs2: use actual name length when find entry in ocfs2_orphan_del()

If the namelen is 20 and name only has actual length 16, it will fail in
ocfs2_find_entry because of mismatch.  So use actual name length when find
entry.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/namei.c

@@ -2322,10 +2322,10 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
 
 	trace_ocfs2_orphan_del(
 	     (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
-	     name, namelen);
+	     name, strlen(name));
 
 	/* find it's spot in the orphan directory */
-	status = ocfs2_find_entry(name, namelen, orphan_dir_inode,
+	status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
 				  &lookup);
 	if (status) {
 		mlog_errno(status);