fix remaining Trie tests
fix remaining Trie tests

vaporry/pyethereum,ebuchman/daoist_protocol,shahankhatch/pyethereum,ethermarket/pyethereum,inzem77/pyethereum,ddworken/pyethereum,karlfloersch/pyethereum,ethers/pyethereum,pipermerriam/pyethereum,karlfloersch/pyethereum,pipermerriam/pyethereum,jnnk/pyethereum,ebuchman/daoist_protocol,harlantwood/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum,ethereum/pyethereum,holiman/pyethereum,ckeenan/pyethereum