From a6802e21d824e786d1e2a8440cf749a6e1a8d95f Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 18 Jul 2017 18:28:29 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/587

---
 coders/mat.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/coders/mat.c b/coders/mat.c
index 240cedf79..cd8f0c72f 100644
--- a/coders/mat.c
+++ b/coders/mat.c
@@ -1350,6 +1350,8 @@ END_OF_READING:
     clone_info = NULL;
   }
   if (logging) (void)LogMagickEvent(CoderEvent,GetMagickModule(),"return");
+  if ((image != image2) && (image2 != (Image *) NULL))
+    image2=DestroyImage(image2);
   if(image==NULL)
     ThrowReaderException(CorruptImageError,"ImproperImageHeader");
   return (image);
-- 
2.40.0