From: Cristy <urban-warrior@imagemagick.org>
Date: Tue, 25 Jul 2017 12:18:44 +0000 (-0400)
Subject: https://github.com/ImageMagick/ImageMagick/issues/621
X-Git-Tag: 7.0.6-4~19
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8dd3ac4edc633f6f54829cc63231cb53f24c0b9f;p=imagemagick

https://github.com/ImageMagick/ImageMagick/issues/621
---

diff --git a/coders/png.c b/coders/png.c
index a3a84bc1c..01007898a 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2268,6 +2268,8 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
     }
 
   pixel_info=(MemoryInfo *) NULL;
+  quantum_scanline = (Quantum *) NULL;
+  quantum_info = (QuantumInfo *) NULL;
 
   if (setjmp(png_jmpbuf(ping)))
     {