catch Encoding::UndefinedConversionError for compatibility with JRuby 1.9 mode

Author: Zaid Zawaideh

lib/openid/consumer/html_parse.rb

@@ -36,7 +36,7 @@ def OpenID.unescape_hash(h)
   def OpenID.parse_link_attrs(html)
     begin
       stripped = html.gsub(REMOVED_RE,'')
-    rescue ArgumentError
+    rescue ArgumentError, Encoding::UndefinedConversionError
       stripped = html.encode('UTF-8', 'binary', :invalid => :replace, :undef => :replace, :replace => '').gsub(REMOVED_RE,'')
     end
     parser = HTMLTokenizer.new(stripped)