fix: [correlations] Don't barf when trying to add data with no correlations
fix: [correlations] Don't barf when trying to add data with no correlations

MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP