Check that rows have been packed in getGroups before returning
Check that rows have been packed in getGroups before returning

IGV-2071

igvteam/igv,itenente/igv,godotgildor/igv,itenente/igv,godotgildor/igv,igvteam/igv,godotgildor/igv,itenente/igv,amwenger/igv,amwenger/igv,itenente/igv,igvteam/igv,amwenger/igv,igvteam/igv,igvteam/igv,godotgildor/igv,itenente/igv,amwenger/igv,amwenger/igv,godotgildor/igv