luci-app-upnp: remove extra space

This was introduced in b01a394bde
(Fixes: "luci-app-upnp: add stun support")
Fixes: #4604

Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
This commit is contained in:
Chen Minqiang 2020-11-20 09:19:20 +08:00 committed by Hannu Nyman
parent 7a33824f41
commit b36f560abf