fixed getting function signature hash
fixed getting function signature hash

vaporry/mix,yann300/mix,LianaHus/mix,LefterisJP/mix,tomthebuzz/mix,chriseth/mix,chriseth/mix,chriseth/mix,LianaHus/mix,LefterisJP/mix,ethereum/mix,ethereum/mix,yann300/mix,tomthebuzz/mix,vaporry/mix,vaporry/mix,ethereum/mix,yann300/mix,LianaHus/mix,tomthebuzz/mix,LefterisJP/mix