lldpd: fix restart

lldpd: fix restart

Redirection broke in 5364fe0f01ca ("lldpd: shellcheck fixes")

redirects to /dev/null shall be handled correctly (i.e. last).

This fixes these errors on `/etc/init.d/lldpd reload`:

2024-03-16T20:39:00 [WARN/lldpctl] unknown command from argument 1: `/dev/null`
2024-03-16T20:39:00 [WARN/lldpctl] unknown command from argument 1: `/dev/null`
2024-03-16T20:39:00 [WARN/lldpctl] unknown command from argument 1: `/dev/null`
2024-03-16T20:39:00 [WARN/lldpctl] unknown command from argument 1: `/dev/null`

Tested-on: 22.03.6
Fixes: 5364fe0f01ca ("lldpd: shellcheck fixes")
Signed-off-by: Paul Donald <newtwen+github@gmail.com>
[ improve commit description, add fixes tag ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>