From 65f5333875d7bbfc13436e224a181d10a80d1ada Mon Sep 17 00:00:00 2001
From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Mon, 8 Jun 2015 20:05:50 +0800
Subject: [PATCH] btrfs: cleanup noused initialization of dev in
 btrfs_end_bio()

It is introduced by:
 c404e0dc2c843b154f9a36c3aec10d0a715d88eb
 Btrfs: fix use-after-free in the finishing procedure of the device replace

But seems no relationship with that bug, this patch revirt these
code block for cleanup.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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