Merge #10108: ApproximateBestSubset should take inputs by reference, not value

5335132 ApproximateBestSubset should take inputs by reference, not value (Ryan Havar)

Tree-SHA512: 0990de7efbeba8ef9b70ccee45298c2fb982459a64e44b6395f7d28808740315d2d26e87103d4848677fc519cdf3247c1bde498ecb2e239e18134cb933e6b661

Author: sipa

src/wallet/wallet.cpp

@@ -2023,7 +2023,7 @@ void CWallet::AvailableCoins(std::vector<COutput>& vCoins, bool fOnlySafe, const
     }
 }
 
-static void ApproximateBestSubset(std::vector<std::pair<CAmount, std::pair<const CWalletTx*,unsigned int> > >vValue, const CAmount& nTotalLower, const CAmount& nTargetValue,
+static void ApproximateBestSubset(const std::vector<std::pair<CAmount, std::pair<const CWalletTx*,unsigned int> > >& vValue, const CAmount& nTotalLower, const CAmount& nTargetValue,
                                   std::vector<char>& vfBest, CAmount& nBest, int iterations = 1000)
 {
     std::vector<char> vfIncluded;
@@ -2885,7 +2885,7 @@ bool CWallet::SetDefaultKey(const CPubKey &vchPubKey)
 
 /**
  * Mark old keypool keys as used,
- * and generate all new keys 
+ * and generate all new keys
  */
 bool CWallet::NewKeyPool()
 {