From: Mark Adler <madler@alumni.caltech.edu>
Date: Thu, 30 Mar 2017 21:48:43 +0000 (-0700)
Subject: Don't compute check value for raw inflate if asked to validate.
X-Git-Tag: 1.9.9-b1~571
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=527e59f8167ec6eea0923025be241aec923e7cfb;p=thirdparty%2Fzlib-ng.git

Don't compute check value for raw inflate if asked to validate.
---

diff --git a/inflate.c b/inflate.c
index ee0e5308..d17bc274 100644
--- a/inflate.c
+++ b/inflate.c
@@ -1503,7 +1503,7 @@ int ZEXPORT PREFIX(inflateValidate)(PREFIX3(stream) *strm, int check) {
     if (inflateStateCheck(strm))
         return Z_STREAM_ERROR;
     state = (struct inflate_state *)strm->state;
-    if (check)
+    if (check && state->wrap)
         state->wrap |= 4;
     else
         state->wrap &= ~4;