fix crash when a contact has been removed
fix crash when a contact has been removed

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