From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 25 Jul 2017 12:03:52 +0000 (-0400)
Subject: https://github.com/ImageMagick/ImageMagick/issues/619
X-Git-Tag: 7.0.6-4~22
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7b8e6feeb055a26b39e91d6c066afee2b5e5f2d2;p=imagemagick

https://github.com/ImageMagick/ImageMagick/issues/619
---

diff --git a/coders/png.c b/coders/png.c
index 427db5974..0191f3aff 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -5338,7 +5338,11 @@ static Image *ReadOneMNGImage(MngInfo* mng_info, const ImageInfo *image_info,
             mng_info->dhdr_warning++;
           }
         if (memcmp(type,mng_MEND,4) == 0)
-          break;
+          {
+            if (length != 0)
+              chunk=(unsigned char *) RelinquishMagickMemory(chunk);
+            break;
+          }
 
         if (skip_to_iend)
           {