QPR-12329 fixes

Author: pcaspers

OREData/ored/model/commodityschwartzmodelbuilder.cpp

@@ -153,7 +153,7 @@ void CommoditySchwartzModelBuilder::performCalculations() const {
             << " kappa=" << parametrization_->kappaParameter());
 
         // use identical start values for each calibration to ensure identical results for identical baskets
-        model->setParams(params_);
+        model_->setParams(params_);
 
         model_->calibrate(optionBasket_, *data_->optimizationMethod(), data_->endCriteria(), data_->constraint(), weights, fix);
 

OREData/ored/model/commodityschwartzmodelbuilder.hpp

@@ -117,6 +117,8 @@ class CommoditySchwartzModelBuilder : public QuantExt::ModelBuilder {
     boost::shared_ptr<QuantExt::MarketObserver> marketObserver_;
 
     mutable std::vector<Real> calibrationErrors_;
+
+    mutable Array params_;
 };
 } // namespace data
 } // namespace ore