Get rid of mapArgs direct access in ZMQ construction

src/init.cpp

@@ -1282,7 +1282,7 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
     }
 
 #if ENABLE_ZMQ
-    pzmqNotificationInterface = CZMQNotificationInterface::CreateWithArguments(mapArgs);
+    pzmqNotificationInterface = CZMQNotificationInterface::Create();
 
     if (pzmqNotificationInterface) {
         RegisterValidationInterface(pzmqNotificationInterface);

src/zmq/zmqnotificationinterface.cpp

@@ -29,7 +29,7 @@ CZMQNotificationInterface::~CZMQNotificationInterface()
     }
 }
 
-CZMQNotificationInterface* CZMQNotificationInterface::CreateWithArguments(const std::map<std::string, std::string> &args)
+CZMQNotificationInterface* CZMQNotificationInterface::Create()
 {
     CZMQNotificationInterface* notificationInterface = NULL;
     std::map<std::string, CZMQNotifierFactory> factories;
@@ -42,11 +42,11 @@ CZMQNotificationInterface* CZMQNotificationInterface::CreateWithArguments(const
 
     for (std::map<std::string, CZMQNotifierFactory>::const_iterator i=factories.begin(); i!=factories.end(); ++i)
     {
-        std::map<std::string, std::string>::const_iterator j = args.find("-zmq" + i->first);
-        if (j!=args.end())
+        std::string arg("-zmq" + i->first);
+        if (IsArgSet(arg))
         {
             CZMQNotifierFactory factory = i->second;
-            std::string address = j->second;
+            std::string address = GetArg(arg, "");
             CZMQAbstractNotifier *notifier = factory();
             notifier->SetType(i->first);
             notifier->SetAddress(address);

src/zmq/zmqnotificationinterface.h

@@ -17,7 +17,7 @@ class CZMQNotificationInterface : public CValidationInterface
 public:
     virtual ~CZMQNotificationInterface();
 
-    static CZMQNotificationInterface* CreateWithArguments(const std::map<std::string, std::string> &args);
+    static CZMQNotificationInterface* Create();
 
 protected:
     bool Initialize();