[#203] fix network stats error
[#203] fix network stats error

Tetchain/tetblockd,paytokens-beta/payblockd,Tetchain/tetblockd,ClearingHouse/clearblockd,Metronote/metroblockd-alpha,CounterpartyXCP/counterblock,ClearingHouse/clearblockd,Peertokens/peerblockd,patricklodder/dogeblockd,Bluejudy/blueblockd,Paytokens/payblockd,metronotes-beta/metroblockd,Reddcraft/reddblockd,Litetokens/liteblockd,Reddcraft/reddblockd,Bluejudy/blueblockd,Czarparty/czarblockd,CounterpartyXCP/counterblock