fix crash on unknown accounts types
fix crash on unknown accounts types

Konubinix/weboob,nojhan/weboob-devel,nojhan/weboob-devel,sputnick-dev/weboob,RouxRC/weboob,RouxRC/weboob,Konubinix/weboob,nojhan/weboob-devel,laurent-george/weboob,Boussadia/weboob,frankrousseau/weboob,Konubinix/weboob,laurent-george/weboob,Boussadia/weboob,Boussadia/weboob,frankrousseau/weboob,sputnick-dev/weboob,willprice/weboob,sputnick-dev/weboob,frankrousseau/weboob,laurent-george/weboob,willprice/weboob,willprice/weboob,RouxRC/weboob,Boussadia/weboob