Fix initialization of Model::simulation_parameters_::pscale (#2530)

pscale was set on moved-from object simulation_parameters instead of simulation_parameters_

src/model.cpp

@@ -196,7 +196,7 @@ Model::Model(
  == gsl::narrow<int>(simulation_parameters_.fixedParameters.size())
  );
 
- simulation_parameters.pscale = std::vector<ParameterScaling>(
+ simulation_parameters_.pscale = std::vector<ParameterScaling>(
  model_dimensions.np, ParameterScaling::none
  );