From a43f4155ee916fbed080acd534232a9d2396b5b5 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 6 Sep 2017 12:07:01 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/734

---
 coders/mat.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/coders/mat.c b/coders/mat.c
index b3a59c583..c7edc46a8 100644
--- a/coders/mat.c
+++ b/coders/mat.c
@@ -885,6 +885,7 @@ static Image *ReadMATImage(const ImageInfo *image_info,ExceptionInfo *exception)
      Open image file.
    */
   image = AcquireImage(image_info,exception);
+  image2 = (Image *) NULL;
 
   status = OpenBlob(image_info, image, ReadBinaryBlobMode, exception);
   if (status == MagickFalse)
@@ -959,6 +960,8 @@ MATLAB_KO:
     filepos += MATLAB_HDR.ObjectSize + 4 + 4;
 
     clone_info=CloneImageInfo(image_info);
+    if ((image != image2) && (image2 != (Image *) NULL))
+      image2=DestroyImage(image2);
     image2 = image;
 #if defined(MAGICKCORE_ZLIB_DELEGATE)
     if(MATLAB_HDR.DataType == miCOMPRESSED)
-- 
2.50.1