Vulnerable and completely outdated 3rd party ZIP code in FastStone image viewer

The FastStone image viewer http://www.faststone.org/ and most probably other FastStone products too contains a 3rd party ZipDll.dll 1.6.0.0 dated 2001-10-28. This DLL was originally written by Chris Vleghert and Eric W. Engler, based on InfoZIPs http://infozip.org code from 2000. It is but...