rpc: fix peer address printing during logging
rpc: fix peer address printing during logging

dreamsxin/seastar,sjperkins/seastar,kjniemi/seastar,cloudius-systems/seastar,syuu1228/seastar,avikivity/seastar,scylladb/seastar,avikivity/seastar,kjniemi/seastar,sjperkins/seastar,syuu1228/seastar,cloudius-systems/seastar,dreamsxin/seastar,scylladb/seastar,dreamsxin/seastar,kjniemi/seastar,avikivity/seastar,scylladb/seastar,syuu1228/seastar,sjperkins/seastar,cloudius-systems/seastar