core: rely on getPyType function to get the PyTypeObject related to a Scalar type

include/eigenpy/eigen-to-python.hpp

@@ -25,7 +25,7 @@ namespace boost { namespace python {
     
 #ifndef BOOST_PYTHON_NO_PY_SIGNATURES
     inline PyTypeObject const*
-    get_pytype()const
+    get_pytype() const
     {
       return converter::registered_pytype<MatrixRef>::get_pytype();
     }

include/eigenpy/numpy-allocator.hpp

@@ -42,8 +42,8 @@ namespace eigenpy
       
       if(NumpyType::sharedMemory())
       {
-        PyTypeObject * py_type_ptr = &PyArray_Type;
-        PyArrayObject * pyArray = (PyArrayObject*) call_PyArray_New(py_type_ptr,
+        PyTypeObject py_type = getPyType<Scalar>();
+        PyArrayObject * pyArray = (PyArrayObject*) call_PyArray_New(&py_type,
                                                                     static_cast<int>(nd),
                                                                     shape,
                                                                     NumpyEquivalentType<Scalar>::type_code,
@@ -80,8 +80,8 @@ namespace eigenpy
       
       if(NumpyType::sharedMemory())
       {
-        PyTypeObject * py_type_ptr = &PyArray_Type;
-        PyArrayObject * pyArray = (PyArrayObject*) call_PyArray_New(py_type_ptr,
+        PyTypeObject py_type = getPyType<Scalar>();
+        PyArrayObject * pyArray = (PyArrayObject*) call_PyArray_New(&py_type,
                                                                     static_cast<int>(nd),
                                                                     shape,
                                                                     NumpyEquivalentType<Scalar>::type_code,