From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 17 Oct 2015 15:43:59 +0000 (-0400)
Subject: ...
X-Git-Tag: 7.0.1-0~554
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=29e8af76f4361aa375e375cdd4545536cd9b9ac9;p=imagemagick

...
---

diff --git a/MagickCore/quantize.c b/MagickCore/quantize.c
index 32b6a98a8..d39ec0821 100644
--- a/MagickCore/quantize.c
+++ b/MagickCore/quantize.c
@@ -1140,8 +1140,11 @@ static void ClosestColor(const Image *image,CubeInfo *cube_info,
               distance+=pixel*pixel;
               if (distance <= cube_info->distance)
                 {
-                  pixel=p->alpha-q->alpha;
-                  distance+=pixel*pixel;
+                  if (cube_info->associate_alpha != MagickFalse)
+                    {
+                      pixel=p->alpha-q->alpha;
+                      distance+=pixel*pixel;
+                    }
                   if (distance <= cube_info->distance)
                     {
                       cube_info->distance=distance;