From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Sun, 7 May 2017 10:17:31 +0000 (+0200)
Subject: Fixed memory leak reported in #476.
X-Git-Tag: 7.0.5-6~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7fcca7ff26c0579f3010222b9a44063ba0b45182;p=imagemagick

Fixed memory leak reported in #476.
---

diff --git a/coders/png.c b/coders/png.c
index d212497dd..c194d0858 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -5579,7 +5579,10 @@ static Image *ReadOneMNGImage(MngInfo* mng_info, const ImageInfo *image_info,
 
             if ((mng_info->mng_width > 65535L) ||
                 (mng_info->mng_height > 65535L))
-              ThrowReaderException(ImageError,"WidthOrHeightExceedsLimit");
+              {
+                chunk=(unsigned char *) RelinquishMagickMemory(chunk);
+                ThrowReaderException(ImageError,"WidthOrHeightExceedsLimit");
+              }
 
             (void) FormatLocaleString(page_geometry,MagickPathExtent,
               "%.20gx%.20g+0+0",(double) mng_info->mng_width,(double)