Fixed minor DB bug
Fixed minor DB bug

holiman/pyethereum,pipermerriam/pyethereum,vaporry/pyethereum,ethereum/pyethereum,karlfloersch/pyethereum,harlantwood/pyethereum,ethereum/pyethereum,inzem77/pyethereum,shahankhatch/pyethereum,ethermarket/pyethereum,karlfloersch/pyethereum,shahankhatch/pyethereum,pipermerriam/pyethereum,ddworken/pyethereum,ckeenan/pyethereum