From 5138bf37bfd6266adfa268623bace71c26ca3dd9 Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Thu, 27 Apr 2017 10:49:38 +0200
Subject: [PATCH] Remove unnecessary check.

---
 coders/png.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/coders/png.c b/coders/png.c
index f623fc2f2..2d2ae81d5 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -5547,8 +5547,7 @@ static Image *ReadMNGImage(const ImageInfo *image_info,
           {
             if (length != 28)
               {
-                if (chunk)
-                  chunk=(unsigned char *) RelinquishMagickMemory(chunk);
+                chunk=(unsigned char *) RelinquishMagickMemory(chunk);
                 ThrowReaderException(CorruptImageError,"CorruptImage");
               }
 
-- 
2.40.0