Fix bug in XferStatsLog that would interleave output messages #6608
Fix bug in XferStatsLog that would interleave output messages #6608

Only happens when there are no files to transfer in either direction.

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor