router_validate_address: ensure rethint is properly initialised
router_validate_address: ensure rethint is properly initialised

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