f2fs: fix typos in code comments

lengh -> length

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Geliang Tang 2019-01-25 15:35:01 +08:00 • committed by Jaegeuk Kim
commit 1ffdc38075