ch_free: don't just free server pointers
ch_free: don't just free server pointers

servers are freed by router_free with a proper shutdown followed by free

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