Merge pull request #2536 from gouarin/small-fix

Small fix

Author: JohanMabille

include/xtensor/xcontainer.hpp

@@ -34,7 +34,6 @@ namespace xt
     struct xcontainer_iterable_types
     {
         using inner_shape_type = typename xcontainer_inner_types<D>::inner_shape_type;
-        using storage_type = typename xcontainer_inner_types<D>::storage_type;
         using stepper = xstepper<D>;
         using const_stepper = xstepper<const D>;
     };

include/xtensor/xexpression.hpp

@@ -527,7 +527,7 @@ namespace xt
         using inner_backstrides_type = xtl::mpl::eval_if_t<has_strides<E>,
                                                            detail::expr_inner_backstrides_type<E>,
                                                            get_strides_type<shape_type>>;
-        using storage_type = xtl::mpl::eval_if_t<has_data_interface<E>,
+        using storage_type = xtl::mpl::eval_if_t<has_storage_type<E>,
                                                  detail::expr_storage_type<E>,
                                                  make_invalid_type<>>;