fix annoying printout about missing content-type header on version check
fix annoying printout about missing content-type header on version check

gotcha/testcounter,Reddcraft/reddcraftd,Ziftr/counterpartyd,Bluejudy/bluejudyd,ClearingHouse/clearinghoused,F483/counterparty-lib,Litetokens/litetokensd,CounterpartyXCP/counterparty-lib,F483/counterparty-lib,Paytokens/paytokensd,CounterpartyXCP/counterparty-lib,monaparty/counterparty-lib,Tetchain/tetchaind,coinwarp/dogeparty-lib,Reddcraft/reddcraftd,tokenly/counterparty-lib,jarymoth/counterpartyd,Bluejudy/bluejudyd,monaparty/counterparty-lib,Tetchain/tetchaind,stefcrypto/counterparty-lib,Ziftr/counterpartyd,ClearingHouse/clearinghoused