From f9a62d090cf47fae2fe6f6bd8eb9f24482573fd8 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Mon, 10 Jan 2011 12:10:50 -0500
Subject: [PATCH] ext4: use IS_ERR() to check for errors in ext4_error_file

d_path() returns an ERR_PTR and it doesn't return NULL.  This is in
ext4_error_file() and no one actually calls ext4_error_file().

Signed-off-by: Dan Carpenter <error27@gmail.com>
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