commit c376a417a724c21173f40765bd643388523b16f7
author Mark Adler <zlib@madler.net> Thu Oct 12 21:07:22 2017 -0700
committer Mark Adler <zlib@madler.net> Thu Oct 12 21:07:22 2017 -0700
tree 3b267bc5e4db7f9ac48d5a3acbe359cc581851f2
parent 288f1080317b954b6bdca33708631c011549c008

Fix deflateEnd() to not report an error at start of raw deflate.

deflate.c

diff --git a/deflate.c b/deflate.c
index 568eadd..425babc 100644
--- a/deflate.c
+++ b/deflate.c
@@ -491,7 +491,7 @@
 #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 @@
     }
 
     /* 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;