From c376a417a724c21173f40765bd643388523b16f7 Mon Sep 17 00:00:00 2001
From: Mark Adler <zlib@madler.net>
Date: Thu, 12 Oct 2017 21:07:22 -0700
Subject: Fix deflateEnd() to not report an error at start of raw deflate.

---
 deflate.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/deflate.c b/deflate.c
index 568eadd..425babc 100644
--- a/deflate.c
+++ b/deflate.c
@@ -491,7 +491,7 @@ int ZEXPORT deflateResetKeep (strm)
 #ifdef GZIP
         s->wrap == 2 ? GZIP_STATE :
 #endif
-        s->wrap ? INIT_STATE : BUSY_STATE;
+        INIT_STATE;
     strm->adler =
 #ifdef GZIP
         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
@@ -814,6 +814,8 @@ int ZEXPORT deflate (strm, flush)
     }
 
     /* Write the header */
+    if (s->status == INIT_STATE && s->wrap == 0)
+        s->status = BUSY_STATE;
     if (s->status == INIT_STATE) {
         /* zlib header */
         uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
-- 
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