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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>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2018-11-01 21:27:32 +03:00 committed by Kevin Wolf
parent 3a75187fd8
commit 19a4448853
1 changed files with 1 additions and 1 deletions
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block/qcow2.c
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@ -3738,7 +3738,7 @@ static ssize_t qcow2_compress(void *dest, const void *src, size_t size)
memset(&strm, 0, sizeof(strm)); memset(&strm, 0, sizeof(strm));
ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
-12, 9, Z_DEFAULT_STRATEGY); -12, 9, Z_DEFAULT_STRATEGY);
if (ret != 0) { if (ret != Z_OK) {
return -2; return -2;
} }