Whisper test fix.
Whisper test fix.

douglas-larocca/solidity,chriseth/solidity,shahankhatch/solidity,ruchevits/solidity,debris/solidity,ruchevits/solidity,ruchevits/solidity,gluk256/solidity,LianaHus/solidity,vaporry/solidity,ethers/solidity,arkpar/solidity,ruchevits/solidity,chriseth/solidity-doc-test