From dfcdf5460081da145425a80fe9cc5ce6aa962192 Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Sat, 6 Jan 2018 13:34:19 +0100
Subject: [PATCH] Fixed check for when the custom_stream was changed into a
 file.

---
 MagickCore/blob.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MagickCore/blob.c b/MagickCore/blob.c
index 372f47f0e..3fafc5998 100644
--- a/MagickCore/blob.c
+++ b/MagickCore/blob.c
@@ -766,7 +766,7 @@ MagickExport Image *CustomStreamToImage(const ImageInfo *image_info,
     }
   image=(Image *) NULL;
   if ((GetMagickBlobSupport(magick_info) != MagickFalse) ||
-      (blob_info->custom_stream == (CustomStreamInfo *) NULL))
+      (*blob_info->filename != '\0'))
     {
       char
         filename[MagickPathExtent];
-- 
2.40.0