Fix error when creating event with room but no loc
Fix error when creating event with room but no loc

OmeGak/indico,ThiefMaster/indico,pferreir/indico,mic4ael/indico,mvidalgarcia/indico,indico/indico,OmeGak/indico,pferreir/indico,mic4ael/indico,mic4ael/indico,ThiefMaster/indico,pferreir/indico,DirkHoffmann/indico,mvidalgarcia/indico,OmeGak/indico,OmeGak/indico,indico/indico,DirkHoffmann/indico,indico/indico,mic4ael/indico,DirkHoffmann/indico,indico/indico,DirkHoffmann/indico,mvidalgarcia/indico,ThiefMaster/indico,ThiefMaster/indico,mvidalgarcia/indico,pferreir/indico