Fix 'NoneType' object has no attribute 'committee'
Fix 'NoneType' object has no attribute 'committee'

E.g: When accessing /member/832/more_committee/

habeanf/Open-Knesset,Shrulik/Open-Knesset,jspan/Open-Knesset,daonb/Open-Knesset,ofri/Open-Knesset,ofri/Open-Knesset,DanaOshri/Open-Knesset,habeanf/Open-Knesset,alonisser/Open-Knesset,jspan/Open-Knesset,OriHoch/Open-Knesset,MeirKriheli/Open-Knesset,Shrulik/Open-Knesset,ofri/Open-Knesset,OriHoch/Open-Knesset,noamelf/Open-Knesset,Shrulik/Open-Knesset,ofri/Open-Knesset,daonb/Open-Knesset,otadmor/Open-Knesset,navotsil/Open-Knesset,noamelf/Open-Knesset,otadmor/Open-Knesset,alonisser/Open-Knesset,navotsil/Open-Knesset,jspan/Open-Knesset,DanaOshri/Open-Knesset,daonb/Open-Knesset,DanaOshri/Open-Knesset,noamelf/Open-Knesset,otadmor/Open-Knesset,MeirKriheli/Open-Knesset,DanaOshri/Open-Knesset,OriHoch/Open-Knesset,habeanf/Open-Knesset,navotsil/Open-Knesset,alonisser/Open-Knesset,noamelf/Open-Knesset,MeirKriheli/Open-Knesset,jspan/Open-Knesset,Shrulik/Open-Knesset,navotsil/Open-Knesset,OriHoch/Open-Knesset,alonisser/Open-Knesset,MeirKriheli/Open-Knesset,otadmor/Open-Knesset,habeanf/Open-Knesset,daonb/Open-Knesset