fix: Defined constant for net40 (#180)

Author: msohailhussain

OptimizelySDK.Net40/OptimizelySDK.Net40.csproj

@@ -19,7 +19,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG;NET35</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;NET35;NET40</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>

OptimizelySDK/Config/HttpProjectConfigManager.cs

@@ -78,7 +78,7 @@ private string GetRemoteDatafileResponse()
 
             return content.Result;  
         }
-#elif NET40        
+#elif NET40      
         private string GetRemoteDatafileResponse()
         {
             var request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(Url);
@@ -87,8 +87,7 @@ private string GetRemoteDatafileResponse()
             if (!string.IsNullOrEmpty(LastModifiedSince))
                 request.Headers.Add("If-Modified-Since", LastModifiedSince);
             var result = (System.Net.HttpWebResponse)request.GetResponse();
-
-            // TODO: Need to revise this code.
+            
             if (result.StatusCode != System.Net.HttpStatusCode.OK) {
                 Logger.Log(LogLevel.ERROR, "Unexpected response from event endpoint, status: " + result.StatusCode);
             }