From 4bdb5432d99e447bb6ae6b9e21906f3ef1d9fb5a Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Mon, 18 Sep 2017 19:20:24 -0400
Subject: [PATCH] ...

---
 MagickCore/histogram.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/MagickCore/histogram.c b/MagickCore/histogram.c
index 5b9d9f877..dc95bd3b4 100644
--- a/MagickCore/histogram.c
+++ b/MagickCore/histogram.c
@@ -78,8 +78,10 @@ typedef struct _NodeInfo
   PixelInfo
     *list;
 
+  size_t
+    extent;
+
   MagickSizeType
-    extent,
     number_unique;
 
   size_t
@@ -268,7 +270,7 @@ static CubeInfo *ClassifyImageColors(const Image *image,
                 node_info->extent,sizeof(*node_info->list));
             }
           else
-            if (i >= node_info->extent)
+            if (i >= (ssize_t) node_info->extent)
               {
                 node_info->extent<<=1;
                 node_info->list=(PixelInfo *) ResizeQuantumMemory(
-- 
2.40.0