[Pkg-gmagick-im-team] Bug#845202: Better check for bufferoverflow for TIFF handling

[Bastien ROUCARIES]

Package: src:imagemagick
version: 8:6.8.9.9-5+deb8u5
Severity: important
Tags: patch security
X-Debbugs-CC: secure-testing-team at lists.alioth.debian.org
control: found -1 8:6.7.7.10-5+deb7u7

commit c668a174e039905b4df1aaea96fcf087b8526575
Author: Cristy <urban-warrior at imagemagick.org>
Date:   Wed Jul 6 08:15:57 2016 -0400

    Improve buffer flow sanity check for TIFF

    origin: upstream,
https://github.com/ImageMagick/ImageMagick/commit/f8877abac8e568b2f339cca70c2c3c1b6eaec288
    bug-debian:

    (cherry picked from commit f8877abac8e568b2f339cca70c2c3c1b6eaec288)