router_getservers: simplify
router_getservers: simplify

Use the srvrs member of the ret struct to populate the return array.
Since we can easily precompute its size now too, remove arbitrary limit
as well.

grobian/carbon-c-relay,piotr1212/carbon-c-relay,piotr1212/carbon-c-relay,grobian/carbon-c-relay,piotr1212/carbon-c-relay,piotr1212/carbon-c-relay,grobian/carbon-c-relay