Fix unbinned_scaling2 under roofit_parallel_scaling branch
Fix unbinned_scaling2 under roofit_parallel_scaling branch

roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts,roofit-dev/parallel-roofit-scripts