Fix a SEGV in dpx file handler. CVE assignment: http://seclists.org/oss-sec/2016/q2/459 Upstream patch: https://anonscm.debian.org/cgit/collab-maint/imagemagick.git/commit/?h=debian-patches/6.8.9.9-4-for-upstream&id=68db5f601d4120170b91f5397e596c0b8f9d3a8e