[libxml++] Patch for libxml++-1.0.5

[Anton D. <ad...@gm...>]

Hi!

Please include my little patch into 1.0 branch (if possible). It fixes
coredump during try of reporting parse error in DomParser::parse_context.
To reproduce coredump one should try to parse XML document with incorrect
encoding; it happens on 1.0.5 only:

std::string xml_doc =
    "<?xml version=\"1.0\" encoding=\"unknown-122\"?>"
    "<root/>";

xmlpp::DomParser parser;
parser.set_substitute_entities();

-- 
Anton Dedov