https://github.com/ImageMagick/ImageMagick/issues/918

diff --git a/coders/png.c b/coders/png.c
index 9214bc42e467afd5fff6af30582692a0f7f76d05..135ec87cba9651b5d0e11b86d23a11de5e73dbd0 100644 (file)
--- a/coders/png.c
+++ b/coders/png.c
@@ -5610,7 +5610,6 @@ static Image *ReadOneMNGImage(MngInfo* mng_info, const ImageInfo *image_info,
             if (length < 2)
               {
                 chunk=(unsigned char *) RelinquishMagickMemory(chunk);
-                mng_info=MngInfoFreeStruct(mng_info);
                 ThrowReaderException(CorruptImageError,"CorruptImage");
               }