Refactor: Remove using namespace <xxx> from wallet/

src/wallet/test/wallet_tests.cpp

@@ -27,16 +27,14 @@ extern UniValue importmulti(const JSONRPCRequest& request);
 // we repeat those tests this many times and only complain if all iterations of the test fail
 #define RANDOM_REPEATS 5
 
-using namespace std;
-
 std::vector<std::unique_ptr<CWalletTx>> wtxn;
 
-typedef set<pair<const CWalletTx*,unsigned int> > CoinSet;
+typedef std::set<std::pair<const CWalletTx*,unsigned int> > CoinSet;
 
 BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 
 static const CWallet testWallet;
-static vector<COutput> vCoins;
+static std::vector<COutput> vCoins;
 
 static void add_coin(const CAmount& nValue, int nAge = 6*24, bool fIsFromMe = false, int nInput=0)
 {
@@ -69,7 +67,7 @@ static void empty_wallet(void)
 
 static bool equal_sets(CoinSet a, CoinSet b)
 {
-    pair<CoinSet::iterator, CoinSet::iterator> ret = mismatch(a.begin(), a.end(), b.begin());
+    std::pair<CoinSet::iterator, CoinSet::iterator> ret = mismatch(a.begin(), a.end(), b.begin());
     return ret.first == a.end() && ret.second == b.end();
 }