fixed broken mdata test
fixed broken mdata test

armandobs14/rdflib,RDFLib/rdflib,dbs/rdflib,armandobs14/rdflib,marma/rdflib,avorio/rdflib,ssssam/rdflib,yingerj/rdflib,avorio/rdflib,avorio/rdflib,yingerj/rdflib,yingerj/rdflib,marma/rdflib,armandobs14/rdflib,marma/rdflib,armandobs14/rdflib,dbs/rdflib,ssssam/rdflib,dbs/rdflib,RDFLib/rdflib,RDFLib/rdflib,avorio/rdflib,ssssam/rdflib,dbs/rdflib,yingerj/rdflib,marma/rdflib,ssssam/rdflib,RDFLib/rdflib