mapport: merge DispatchMapPort into StartMapPort

src/mapport.cpp

@@ -151,8 +151,9 @@ void StartThreadMapPort()
     }
 }
 
-static void DispatchMapPort()
+void StartMapPort(bool enable)
 {
+    g_mapport_enabled = enable;
     if (!g_mapport_current && g_mapport_enabled) {
         StartThreadMapPort();
     } else if (g_mapport_current && !g_mapport_enabled) {
@@ -161,12 +162,6 @@ static void DispatchMapPort()
     }
 }
 
-void StartMapPort(bool enable)
-{
-    g_mapport_enabled = enable;
-    DispatchMapPort();
-}
-
 void InterruptMapPort()
 {
     g_mapport_enabled = false;