fix for #7653 condor_wait should read all before deciding to exit
fix for #7653 condor_wait should read all before deciding to exit

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