From 3c59216ec4c73cbe0300c1ee3be16487c16c48fe Mon Sep 17 00:00:00 2001
From: Sebo Kim <sanari85@gmail.com>
Date: Thu, 22 Nov 2018 19:44:32 +0900
Subject: [PATCH] in replaceOwner, newOwner must be not null! and fallback
 function 'public' added.

---
 contracts/MultiSigWallet.sol | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contracts/MultiSigWallet.sol b/contracts/MultiSigWallet.sol
index 4b200693..548f7765 100644
--- a/contracts/MultiSigWallet.sol
+++ b/contracts/MultiSigWallet.sol
@@ -93,6 +93,7 @@ contract MultiSigWallet {
 
     /// @dev Fallback function allows to deposit ether.
     function()
+        public
         payable
     {
         if (msg.value > 0)
@@ -158,6 +159,7 @@ contract MultiSigWallet {
         onlyWallet
         ownerExists(owner)
         ownerDoesNotExist(newOwner)
+        notNull(newOwner)
     {
         for (uint i=0; i<owners.length; i++)
             if (owners[i] == owner) {