From: dirk <dirk@git.imagemagick.org>
Date: Tue, 27 Sep 2016 19:29:53 +0000 (+0200)
Subject: Fixed decreasing the number of packets.
X-Git-Tag: 7.0.3-2~15
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=885af0df9eb6b60710d54b26096036d482911b4a;p=imagemagick

Fixed decreasing the number of packets.
---

diff --git a/coders/sgi.c b/coders/sgi.c
index 0ccd9c031..8262a6c77 100644
--- a/coders/sgi.c
+++ b/coders/sgi.c
@@ -205,12 +205,12 @@ static MagickBooleanType SGIDecode(const size_t bytes_per_pixel,
           }
         else
           {
+            if (number_packets-- == 0)
+              return(MagickFalse);
             pixel=(size_t) (*p++) << 8;
             pixel|=(*p++);
             for ( ; count != 0; count--)
             {
-              if (number_packets-- == 0)
-                return(MagickFalse);
               *q=(unsigned char) (pixel >> 8);
               *(q+1)=(unsigned char) pixel;
               q+=8;