From 98f672b534fe9779050a535a823c065b51c2bcff Mon Sep 17 00:00:00 2001
From: jakub-wojciechowski <jakub@alice.si>
Date: Thu, 14 Sep 2017 22:04:34 +0200
Subject: [PATCH] Make approve method compliant with ERC20

---
 contracts/token/StandardToken.sol | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/contracts/token/StandardToken.sol b/contracts/token/StandardToken.sol
index 728fa7099..dfea3597d 100644
--- a/contracts/token/StandardToken.sol
+++ b/contracts/token/StandardToken.sol
@@ -44,13 +44,6 @@ contract StandardToken is ERC20, BasicToken {
    * @param _value The amount of tokens to be spent.
    */
   function approve(address _spender, uint256 _value) public returns (bool) {
-
-    // To change the approve amount you first have to reduce the addresses`
-    //  allowance to zero by calling `approve(_spender, 0)` if it is not
-    //  already 0 to mitigate the race condition described here:
-    //  https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
-    // require((_value == 0) || (allowed[msg.sender][_spender] == 0));
-
     allowed[msg.sender][_spender] = _value;
     Approval(msg.sender, _spender, _value);
     return true;