fixed distince audiencies in DIC before insert mongo

Program.cs

@@ -99,11 +99,14 @@ List<AudienceObject> BuildAudienceObject(List<AnalyticView> analyticViews, int t
             var audienceHash = Common.GetHash(macAddress);
             if (dicMacByHash.ContainsKey(audienceHash))
             {
-                //append mac into same audienceHash
+                //append new mac into same audienceHash of Dic
                 var value = dicMacByHash[audienceHash];
+                if (!value.Contains(macAddress))
+                {
                     value.Add(macAddress);
                     dicMacByHash[audienceHash] = value;
                 }
+            }
             else
             {
                 dicMacByHash.Add(audienceHash, new List<string> { macAddress });