From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 13 Jun 2018 23:05:32 +0000 (-0400)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8863
X-Git-Tag: 7.0.8-1~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f26d13bd5e0e2ad4dbd04677544906027edae46b;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8863
---

diff --git a/coders/png.c b/coders/png.c
index 285daf8df..058594e13 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -4248,7 +4248,7 @@ static Image *ReadPNGImage(const ImageInfo *image_info,
   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 
   if (status == MagickFalse)
-    ThrowReaderException(FileOpenError,"UnableToOpenFile");
+    return(DestroyImageList(image));
 
   /*
     Verify PNG signature.
@@ -5217,7 +5217,7 @@ static Image *ReadJNGImage(const ImageInfo *image_info,
   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 
   if (status == MagickFalse)
-    return((Image *) NULL);
+    return(DestroyImageList(image));
 
   if (LocaleCompare(image_info->magick,"JNG") != 0)
     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
@@ -7730,7 +7730,7 @@ static Image *ReadMNGImage(const ImageInfo *image_info,
   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
 
   if (status == MagickFalse)
-    return((Image *) NULL);
+    return(DestroyImageList(image));
 
   /* Allocate a MngInfo structure.  */