Replaced raw rethrow statements with BOOST_RETHROW

include/boost/intrusive/circular_list_algorithms.hpp

@@ -421,7 +421,7 @@ class circular_list_algorithms
             BOOST_CATCH(...){
                node_traits::set_next    (last_to_remove, new_f);
                node_traits::set_previous(new_f, last_to_remove);
-               throw;
+               BOOST_RETHROW;
             }
             BOOST_CATCH_END
             node_traits::set_next(last_to_remove, new_f);

include/boost/intrusive/detail/common_slist_algorithms.hpp

@@ -143,7 +143,7 @@ class common_slist_algorithms
             }
             BOOST_CATCH(...){
                node_traits::set_next(last_to_remove, new_f);
-               throw;
+               BOOST_RETHROW;
             }
             BOOST_CATCH_END
             node_traits::set_next(last_to_remove, new_f);