mozcc cannot access RDF creative commons licence in SVG files using asv3

It would be very helpful if anyone knowledgeable about plugin 
architecture and asv3 could add comments to the following bug:

http://bugzilla.mozilla.org/show_bug.cgi?id=249280

thanks

Jonathan Chetwynd
http://www.peepo.co.uk     "It's easy to use"
irc://freenode/accessibility