fix get_order_book_simple call
fix get_order_book_simple call

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