1 files changed, 9 insertions, 9 deletions

diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 997515a04b..bc98435249 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1788,8 +1788,8 @@ bool CWalletTx::IsEquivalentTo(const CWalletTx& _tx) const
 {
         CMutableTransaction tx1 = *this->tx;
         CMutableTransaction tx2 = *_tx.tx;
-        for (unsigned int i = 0; i < tx1.vin.size(); i++) tx1.vin[i].scriptSig = CScript();
-        for (unsigned int i = 0; i < tx2.vin.size(); i++) tx2.vin[i].scriptSig = CScript();
+        for (auto& txin : tx1.vin) txin.scriptSig = CScript();
+        for (auto& txin : tx2.vin) txin.scriptSig = CScript();
         return CTransaction(tx1) == CTransaction(tx2);
 }
 
@@ -2268,10 +2268,10 @@ bool CWallet::SelectCoinsMinConf(const CAmount& nTargetValue, const int nConfMin
 
     if (nTotalLower == nTargetValue)
     {
-        for (unsigned int i = 0; i < vValue.size(); ++i)
+        for (const auto& input : vValue)
         {
-            setCoinsRet.insert(vValue[i]);
-            nValueRet += vValue[i].txout.nValue;
+            setCoinsRet.insert(input);
+            nValueRet += input.txout.nValue;
         }
         return true;
     }
@@ -2401,7 +2401,7 @@ bool CWallet::SignTransaction(CMutableTransaction &tx)
     // sign the new tx
     CTransaction txNewConst(tx);
     int nIn = 0;
-    for (auto& input : tx.vin) {
+    for (const auto& input : tx.vin) {
         std::map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(input.prevout.hash);
         if(mi == mapWallet.end() || input.prevout.n >= mi->second.tx->vout.size()) {
             return false;
@@ -3340,11 +3340,11 @@ std::set< std::set<CTxDestination> > CWallet::GetAddressGroupings()
         }
 
         // group lone addrs by themselves
-        for (unsigned int i = 0; i < pcoin->tx->vout.size(); i++)
-            if (IsMine(pcoin->tx->vout[i]))
+        for (const auto& txout : pcoin->tx->vout)
+            if (IsMine(txout))
             {
                 CTxDestination address;
-                if(!ExtractDestination(pcoin->tx->vout[i].scriptPubKey, address))
+                if(!ExtractDestination(txout.scriptPubKey, address))
                     continue;
                 grouping.insert(address);
                 groupings.insert(grouping);