Fix bad file descriptor leak in the ft-gahp. #3559
Fix bad file descriptor leak in the ft-gahp. #3559

A pipe was leaked on every UPLOAD_SANDBOX and DESTROY_SANDBOX command.

htcondor/htcondor,djw8605/htcondor,djw8605/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,zhangzhehust/htcondor,htcondor/htcondor,htcondor/htcondor,zhangzhehust/htcondor,djw8605/htcondor,djw8605/htcondor,neurodebian/htcondor,htcondor/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,htcondor/htcondor,djw8605/htcondor,djw8605/htcondor,djw8605/htcondor,zhangzhehust/htcondor,htcondor/htcondor,djw8605/htcondor,htcondor/htcondor,zhangzhehust/htcondor,zhangzhehust/htcondor,djw8605/htcondor