Bug#832474: Fix a heap buffer overflow in psd file handling

[Bastien ROUCARIES]

Package: imagemagick
Version: 8:6.7.7.10-5
Severity: grave
Tags: patch security
X-Debbugs-CC: secure-testing-t...@lists.alioth.debian.org

Split of 823750

  Fix a heap buffer overflow in psd file handling

    Bug: https://github.com/ImageMagick/ImageMagick/issues/92.
    Origin: 
https://github.com/ImageMagick/ImageMagick/commit/30eec879c8b446b0ea9a3bb0da1a441cc8482bc4
    Bug-ubuntu:
https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1537418