fixing line throwing FPE issues
This addresses the error in https://its.cern.ch/jira/browse/ATR-23562
One line was causing this error, and has had a safety put in, to avoid division by zero.
This addresses the error in https://its.cern.ch/jira/browse/ATR-23562
One line was causing this error, and has had a safety put in, to avoid division by zero.