From: cristy <urban-warrior@git.imagemagick.org>
Date: Tue, 7 Sep 2010 12:45:15 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~8970
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=217484eb7236f4f3527af0feb39a6dc19a3302fe;p=imagemagick

---

diff --git a/coders/png.c b/coders/png.c
index a91a3fe92..7c670710c 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -7122,10 +7122,10 @@ static MagickBooleanType WriteOnePNGImage(MngInfo *mng_info,
                 }
             p++;
             }
-            if (x != 0)
+            if (x >= 0)
                break;
           }
-          if (x != 0)
+          if (x >= 0)
             png_set_invalid(ping,ping_info,PNG_INFO_tRNS);
         }
       if (png_get_valid(ping,ping_info,PNG_INFO_tRNS))