From 19dc347405263456be2c13750a97ee4567665c58 Mon Sep 17 00:00:00 2001
From: John Snow <jsnow@redhat.com>
Date: Wed, 27 Mar 2019 17:23:04 +0100
Subject: [PATCH 126/163] nbd/server: Kill pointless shadowed variable

RH-Author: John Snow <jsnow@redhat.com>
Message-id: <20190327172308.31077-52-jsnow@redhat.com>
Patchwork-id: 85217
O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 51/55] nbd/server: Kill pointless shadowed variable
Bugzilla: 1691009
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

From: Eric Blake <eblake@redhat.com>

lgtm.com pointed out that commit 678ba275 introduced a shadowed
declaration of local variable 'bs'; thankfully, the inner 'bs'
obtained by 'blk_bs(blk)' matches the outer one given that we had
'blk_insert_bs(blk, bs, errp)' a few lines earlier, and there are
no later uses of 'bs' beyond the scope of the 'if (bitmap)' to
care if we change the value stored in 'bs' while traveling the
backing chain to find a bitmap.  So simply get rid of the extra
declaration.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190207191357.6665-1-eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit 269ee27e99cfbff983a9ab067ae22f6182f11fe2)
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 nbd/server.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/nbd/server.c b/nbd/server.c
index 838c150..0910d09 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -1495,7 +1495,6 @@ NBDExport *nbd_export_new(BlockDriverState *bs, uint64_t dev_offset,
 
     if (bitmap) {
         BdrvDirtyBitmap *bm = NULL;
-        BlockDriverState *bs = blk_bs(blk);
 
         while (true) {
             bm = bdrv_find_dirty_bitmap(bs, bitmap);
-- 
1.8.3.1