ensure blocks is array
ensure blocks is array

serapath-contribution/browser-solidity,Yann-Liang/browser-solidity,soad003/browser-solidity,Yann-Liang/browser-solidity,soad003/browser-solidity,serapath-contribution/browser-solidity,Yann-Liang/browser-solidity,serapath-contribution/browser-solidity,soad003/browser-solidity