Include <stdexcept> header to use std::logic_error()

And some minor stylistic changes.

opm/simulators/flow/python/PyBlackOilSimulator.hpp

@@ -33,8 +33,8 @@
 namespace Opm::Pybind {
 class PyBlackOilSimulator
 {
-    using TypeTag = Opm::Properties::TTag::EclFlowProblem;
 private:
+    using TypeTag = Opm::Properties::TTag::EclFlowProblem;
     using Simulator = Opm::GetPropType<TypeTag, Opm::Properties::Simulator>;
 
 public:

python/simulators/PyBlackOilSimulator.cpp

@@ -28,6 +28,7 @@
 // NOTE: EXIT_SUCCESS, EXIT_FAILURE is defined in cstdlib
 #include <cstdlib>
 #include <iostream>
+#include <stdexcept>
 #include <string>
 #include <opm/simulators/flow/python/PyBlackOilSimulator.hpp>
 
@@ -56,7 +57,7 @@ const Opm::FlowMainEbos<typename Opm::Pybind::PyBlackOilSimulator::TypeTag>&
          PyBlackOilSimulator::getFlowMainEbos() const
 {
     if (this->mainEbos_) {
-        return *(this->mainEbos_.get());
+        return *this->mainEbos_;
     }
     else {
         throw std::runtime_error("BlackOilSimulator not initialized: "