server_shutdown: always destroy/free the queue, thanks valgrind
server_shutdown: always destroy/free the queue, thanks valgrind

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