Fix run-away sorter (prints track header zillions of times)
Fix run-away sorter (prints track header zillions of times)

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