Check for null collection; fix #7369
Check for null collection; fix #7369

kyoushuu/geary,glebihan/geary,abn/geary,AtticHacker/geary,tshikaboom/geary,mjog/geary,mjog/geary,kyoushuu/geary,martinra/geary,jimbonator/geary,AtticHacker/geary,jimbonator/geary,AtticHacker/geary,githubnemo/geary,aatishnn/geary,rschroll/geary,martinra/geary,tshikaboom/geary,githubnemo/geary,MohamedIM/geary-unofficial,rschroll/geary,mjog/geary,tshikaboom/geary,jimbonator/geary,martinra/geary,aatishnn/geary,emersion/geary,robol/geary,glebihan/geary,mpdeimos/geary,robol/geary,emersion/geary,emersion/geary,githubnemo/geary,aatishnn/geary,robol/geary,kpiwko/geary,geekvigilante/geary,glebihan/geary