Fixes compilation error introduced in revision f53bbcd.
Fixes compilation error introduced in revision f53bbcd.

tyh20082000/libpaxos,tudang/paxosudp,tudang/paxosudp,tudang/paxosudp,tudang/paxosudp,tyh20082000/libpaxos,tyh20082000/libpaxos,tudang/paxosudp,tyh20082000/libpaxos,tudang/paxosudp