err:
btr_remove_node(&sit->btrn);
/* Revert to blocking mode if necessary. */
fcntl(STDIN_FILENO, F_SETFL, sit->fd_flags);
//btr_pool_free(sit->btrp);
err:
btr_remove_node(&sit->btrn);
/* Revert to blocking mode if necessary. */
fcntl(STDIN_FILENO, F_SETFL, sit->fd_flags);
//btr_pool_free(sit->btrp);