Commit [ee3e6c] Maximize Restore History

Patch grabed from poppler GIT tree and it fixes a security issue tracked

as CVE-2010-4653

From cad66a7d25abdb6aa15f3aa94a35737b119b2659 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Tue, 02 Nov 2010 19:14:34 +0000
Subject: Fix crash in broken documents

mapLen = (code + 256) & ~255; can wrap and you end up with mapLen < code
that is not what you wanted

Michal Hocko Michal Hocko 2011-02-18

changed src/xpdf/xpdf/CharCodeToUnicode.cc
changed Changelog
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