fix crash when there is no contact
fix crash when there is no contact

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