Fix variable name

see also: 611252b#commitcomment-18064088

Author: konradkonrad

ethereum/blocks.py

@@ -1175,8 +1175,8 @@ def initialize(self, parent):
         if self.number == self.config["DAO_FORK_BLKNUM"]:
             dao_main_addr = utils.normalize_address(self.config["DAO_MAIN_ADDR"])
             for acct in map(utils.normalize_address, self.config["DAO_ADDRESS_LIST"]):
-                self.delta_balance(dao_main_addr, self.get_balance(addr))
-                self.set_balance(addr, 0)
+                self.delta_balance(dao_main_addr, self.get_balance(acct))
+                self.set_balance(acct, 0)
             self.set_code(dao_main_addr, self.config["DAO_NEWCODE"])
         # Likely metropolis changes
         if self.number == self.config["METROPOLIS_FORK_BLKNUM"]: