From f90523d1aa3c414031094ff2284d47791f0c0a05 Mon Sep 17 00:00:00 2001
From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Thu, 13 Nov 2014 11:45:39 +0800
Subject: [PATCH] Btrfs: remove noused bbio_ret in __btrfs_map_block in
 condition

bbio_ret in this condition is always !NULL because previous code
already have a check-and-skip:
4908 if (!bbio_ret)
4909     goto out;

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
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Reading git-format-patch failed