From 9b67d51fcef9f9e080d0fdc68d73d25ca5076b05 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 18 Sep 2018 20:42:36 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/1305

---
 coders/png.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/coders/png.c b/coders/png.c
index 53be12cf9..1c2b83688 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8906,9 +8906,6 @@ static MagickBooleanType WriteOnePNGImage(MngInfo *mng_info,
 
   if (mng_info->write_png_colortype < 7)
   {
-    MagickBooleanType
-      taint;
-
   /* BUILD_PALETTE
    *
    * Normally we run this just once, but in the case of writing PNG8
@@ -8920,13 +8917,11 @@ static MagickBooleanType WriteOnePNGImage(MngInfo *mng_info,
    * transparent and opaque instances.
    */
 
-  taint=image->taint;
-  (void) SetImageDepth(image,image->depth,exception);
-  image->taint=taint;
   tried_332 = MagickFalse;
   tried_333 = MagickFalse;
   tried_444 = MagickFalse;
 
+  image->depth=GetImageDepth(image,exception);
   for (j=0; j<6; j++)
   {
     /*
-- 
2.40.0