From 4a46154516378180796917c062ccc780404ddcc3 Mon Sep 17 00:00:00 2001
From: Benjamin Bollen <ben@simpletoken.org>
Date: Sat, 4 Nov 2017 17:02:22 +0530
Subject: [PATCH] contracts: make Owner transfership explicitly not ownerless
 [ch120]

---
 contracts/Owned.sol | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/contracts/Owned.sol b/contracts/Owned.sol
index 6696c6e..e7ff510 100644
--- a/contracts/Owned.sol
+++ b/contracts/Owned.sol
@@ -39,6 +39,8 @@ contract Owned {
 
 
     function initiateOwnershipTransfer(address _proposedOwner) public onlyOwner returns (bool) {
+        require(_proposedOwner != address(0));
+
         proposedOwner = _proposedOwner;
 
         OwnershipTransferInitiated(_proposedOwner);
@@ -57,6 +59,14 @@ contract Owned {
 
         return true;
     }
+
+
+    function cancelOwnershipTransfer() public onlyOwner returns (bool) {
+        if (proposedOwner == address(0)) return false;
+        
+        proposedOwner = address(0);
+        return true;
+    }
 }