- len = loop_write(o->fd, o->obuf, o->n_obuf, false);
- if (len < 0)
- return log_error_errno(len, "error: cannot write to TTY (%zd): %m", len);
+ r = loop_write(o->fd, o->obuf, o->n_obuf, false);
+ if (r < 0)
+ return log_error_errno(r, "error: cannot write to TTY: %m");