small changes in workdir/main.cc to resolve conflict from HLDReader branch
small changes in workdir/main.cc to resolve conflict from HLDReader branch

wkrzemien/j-pet-framework-examples,JPETTomography/j-pet-framework-examples,JPETTomography/j-pet-framework-examples,wkrzemien/j-pet-framework-examples,JPETTomography/j-pet-framework-examples,wkrzemien/j-pet-framework-examples,JPETTomography/j-pet-framework-examples