[P] fix some warnings

python/dune/gdt/interpolations/oswald.cc

@@ -122,7 +122,7 @@ struct oswald_interpolation_for_all_grids<V, VT, Dune::XT::Common::tuple_null_ty
 };
 
 
-PYBIND11_MODULE(_interpolations_oswald, m)
+PYBIND11_MODULE(_interpolations_oswald, /*m*/)
 {
   namespace py = pybind11;
   using namespace Dune;

python/dune/gdt/local/bilinear-forms/vectorized_element_integrals.cc

@@ -200,9 +200,7 @@ public:
     result *= 0;
     // collect quadrature data
     // - therefore, count how many quadrature points there are
-    size_t num_quadrature_points = 0;
-    for (const auto& DUNE_UNUSED(quadrature_point) : QuadratureRules<D, d>::rule(element.type(), integrand_order_))
-      ++num_quadrature_points;
+    const size_t num_quadrature_points = QuadratureRules<D, d>::rule(element.type(), integrand_order_).size();
     std::vector<double> integration_factor(num_quadrature_points);
     std::vector<double> quadrature_weight(num_quadrature_points);
     // - and store them in a numpy.ndarray

python/dune/gdt/local/functionals/vectorized_element_integrals.cc

@@ -154,9 +154,7 @@ public:
     result *= 0;
     // collect quadrature data
     // - therefore, count how many quadrature points there are
-    size_t num_quadrature_points = 0;
-    for (const auto& DUNE_UNUSED(quadrature_point) : QuadratureRules<D, d>::rule(element.type(), integrand_order_))
-      ++num_quadrature_points;
+    const size_t num_quadrature_points = QuadratureRules<D, d>::rule(element.type(), integrand_order_).size();
     std::vector<double> integration_factor(num_quadrature_points);
     std::vector<double> quadrature_weight(num_quadrature_points);
     // - and store them in a numpy.ndarray

python/dune/gdt/operators/laplace_ipdg_flux_reconstruction.cc

@@ -200,7 +200,7 @@ namespace bindings {
 // };
 
 
-PYBIND11_MODULE(_operators_laplace_ipdg_flux_reconstruction, m)
+PYBIND11_MODULE(_operators_laplace_ipdg_flux_reconstruction, /*m*/)
 {
   namespace py = pybind11;
   using namespace Dune;

python/dunegdtusercode.cc

@@ -22,7 +22,7 @@ using namespace Dune;
 
 
 template <class V>
-V& get_vec_ref(py::handle list_element, const bool recurse = true)
+V& get_vec_ref(py::handle list_element)
 {
   try {
     return list_element.cast<V&>();