From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 23 Dec 2017 02:47:19 +0000 (-0500)
Subject: ...
X-Git-Tag: 7.0.7-16~36
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4114a72264f6de70641c0f72e8e92cf84c70ce63;p=imagemagick

...
---

diff --git a/coders/png.c b/coders/png.c
index 610b90f16..8ef7262cf 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -5884,7 +5884,7 @@ static Image *ReadOneMNGImage(MngInfo* mng_info, const ImageInfo *image_info,
 
                 p++; /* framing mode */
 
-                while (*p && ((p-chunk) < (ssize_t) length-1))
+                while (((p-chunk) < (long) length) && *p)
                   p++;  /* frame name */
 
                 p++;  /* frame name terminator */