Minor fix to benchmarking script.
Minor fix to benchmarking script.


Former-commit-id: ec8ab7081ba853ce1f743187f3189fa3ddf2a382
HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte,HPI-SWA-Lab/SQPyte