From 9198aceb53a493d1be0f3a5a1ce13c07a6fdcd26 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Thu, 25 Apr 2013 13:21:12 +0900
Subject: [PATCH] f2fs: check nid == 0 in add_free_nid

It is more obvious that add_free_nid checks whether the free nid is zero or not.

Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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Reading git-format-patch failed