zlib: initialize git_zstream in git_deflate_init{,_gzip,_raw}

Clear the git_zstream variable at the start of git_deflate_init() etc.
so that callers don't have to do that.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/archive-zip.c b/archive-zip.c
index 4bde019bce..1a54e1b187 100644
--- a/archive-zip.c
+++ b/archive-zip.c
@@ -120,7 +120,6 @@ static void *zlib_deflate_raw(void *data, unsigned long size,
 	void *buffer;
 	int result;
 
-	memset(&stream, 0, sizeof(stream));
 	git_deflate_init_raw(&stream, compression_level);
 	maxsize = git_deflate_bound(&stream, size);
 	buffer = xmalloc(maxsize);
@@ -349,7 +348,6 @@ static int write_zip_entry(struct archiver_args *args,
 		size_t out_len;
 		unsigned char compressed[STREAM_BUFFER_SIZE * 2];
 
-		memset(&zstream, 0, sizeof(zstream));
 		git_deflate_init_raw(&zstream, args->compression_level);
 
 		compressed_size = 0;