From 19a44488532eeccb522c6ee6c36f08b6c69809b0 Mon Sep 17 00:00:00 2001
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Date: Thu, 1 Nov 2018 21:27:32 +0300
Subject: qcow2: use Z_OK instead of 0 for deflateInit2 return code check

Use appropriate macro, corresponding to deflateInit2 spec.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/qcow2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index bc8868c36a..ab1f7388a7 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3738,7 +3738,7 @@ static ssize_t qcow2_compress(void *dest, const void *src, size_t size)
     memset(&strm, 0, sizeof(strm));
     ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
                        -12, 9, Z_DEFAULT_STRATEGY);
-    if (ret != 0) {
+    if (ret != Z_OK) {
         return -2;
     }
 
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