message: fix set_contract
diff: @@ -797,7 +797,7 @@ def set_contract(account, src_file, abi_file, vmtype=1, sign=True):
  print(old_hash, code_hash)
  if code_hash != old_hash:
  code += pack_bytes(wasm)
  - setcode = ['eosio', 'setcode', code, [[account, 'active']]]
  + setcode = ['eosio', 'setcode', code, {account:'active'}]
  actions.append(setcode)
  else:
  _code = open(src_file, 'rb').read()
  