fix error message when the value isn't in the choices list
fix error message when the value isn't in the choices list

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