Add src/wallet/* code to wallet:: namespace

src/wallet/spend.h

@@ -10,6 +10,7 @@
 #include <wallet/transaction.h>
 #include <wallet/wallet.h>
 
+namespace wallet {
 /** Get the marginal bytes if spending the specified output from this transaction */
 int GetTxSpendSize(const CWallet& wallet, const CWalletTx& wtx, unsigned int out, bool use_max_sig = false);
 
@@ -142,5 +143,6 @@ bool CreateTransaction(CWallet& wallet, const std::vector<CRecipient>& vecSend,
  * calling CreateTransaction();
  */
 bool FundTransaction(CWallet& wallet, CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl);
+} // namespace wallet
 
 #endif // BITCOIN_WALLET_SPEND_H