fix zero integral error in PDFcreator::getRand()
Fix to error messaged printed when calling getRand() in FCS muon punch-through simulation. Example:
EVNTtoHITS 16:09:56 Error in <TH1D::ComputeIntegral>: Integral = zero
Fix to error messaged printed when calling getRand() in FCS muon punch-through simulation. Example:
EVNTtoHITS 16:09:56 Error in <TH1D::ComputeIntegral>: Integral = zero