eina-cxx: Fix compilation error on clang

Clang implicitly deletes the default-constructor on range_ptrlist, which must be explicitly defined.

src/bindings/eina_cxx/eina_ptrlist.hh

@@ -282,6 +282,12 @@ struct range_ptr_list : _range_template<T, _ptr_list_access_traits>
   typedef typename _base_type::value_type value_type; /**< The type of each element. */
   typedef typename _base_type::native_handle_type native_handle_type; /** Type for the native Eina list handle. */
 
+  /**
+   * @brief Creates a singular range
+   */
+  range_ptr_list()
+  {}
+
   /**
    * @brief Creates a range from a native Eina list handle.
    */

src/bindings/eina_cxx/eina_range_types.hh

@@ -37,6 +37,12 @@ struct _const_range_template
   typedef typename Traits::template const_native_handle<T>::type native_handle_type; /**< Type for the native handle of the container. */
   typedef _const_range_template<T, Traits> _self_type; /**< Type of the range itself.  */
 
+  /**
+   * @brief Creates a singular range object
+   */
+  _const_range_template()
+  {}
+
   /**
    * @brief Creates a range object wrapping the given native container handle.
    */
@@ -369,6 +375,12 @@ struct _range_template : private std::conditional
   typedef typename _base_type::size_type size_type; /**< Type for size information. */
   typedef typename _base_type::difference_type difference_type; /**< Type to represent the distance between two iterators. */
 
+  /**
+   * @brief Creates a singular range object
+   */
+  _range_template()
+  {}
+
   /**
    * @brief Creates a range object wrapping the given native container handle.
    */