test/regress_be: cover finalizers from inactive to active queue Right now this will fail with the next assertion: $ regress --no-fork --verbose bufferevent/bufferevent_socket_filter_inactive bufferevent/bufferevent_socket_filter_inactive: [err] ../event.c:862: Assertion TAILQ_EMPTY(&base->activequeues[i]) failed in event_base_free_ Aborted