https://github.com/ImageMagick/ImageMagick/issues/566

diff --git a/coders/histogram.c b/coders/histogram.c
index 403eba2d570ab32e51208f71c3dc8b6d74be51a1..21c76d7c24c1db4d2c4ce1fb1f6ffebc04f4e4f3 100644 (file)
--- a/coders/histogram.c
+++ b/coders/histogram.c
@@ -376,11 +376,7 @@ static MagickBooleanType WriteHISTOGRAMImage(const ImageInfo *image_info,
       (LocaleCompare(write_info->magick,"HISTOGRAM") == 0))
     (void) FormatLocaleString(histogram_image->filename,MagickPathExtent,
       "miff:%s",write_info->filename);
-  histogram_image->blob=(BlobInfo *) DetachBlob(histogram_image->blob);
-  histogram_image->blob=CloneBlobInfo(image->blob);
   status=WriteImage(write_info,histogram_image,exception);
-  image->blob=(BlobInfo *) DetachBlob(image->blob);
-  image->blob=CloneBlobInfo(histogram_image->blob);
   histogram_image=DestroyImage(histogram_image);
   write_info=DestroyImageInfo(write_info);
   return(status);