Remove two compiler warnings for 1.2 release relating to async methods that are not.

Author: damieng

Source/CSharpAnalytics/AutoMeasurement/WinFormsAutoMeasurement.cs

@@ -78,7 +78,7 @@ protected override async Task Save<T>(T data, string name)
         /// Setup the Uri requester complete with user agent etc.
         /// </summary>
         /// <returns>Task that completes when the requester is ready to use.</returns>
-        protected override async Task SetupRequesterAsync()
+        protected override Task SetupRequesterAsync()
         {
             var httpClientRequester = new HttpClientRequester();
             httpClientRequester.HttpClient.DefaultRequestHeaders.UserAgent.ParseAdd(ClientUserAgent);
@@ -88,6 +88,8 @@ protected override async Task SetupRequesterAsync()
                 httpClientRequester.HttpClient.DefaultRequestHeaders.UserAgent.ParseAdd(systemUserAgent);
 
             Requester = httpClientRequester.Request;
+
+            return Task.FromResult(true);
         }
 
         /// <summary>

Source/CSharpAnalytics/AutoMeasurement/WindowsPhoneAutoMeasurement.cs

@@ -92,10 +92,12 @@ protected override void UnhookEvents()
         /// Setup the Uri requester complete with user agent etc.
         /// </summary>
         /// <returns>Task that completes when the requester is ready to use.</returns>
-        protected override async Task SetupRequesterAsync()
+        protected override Task SetupRequesterAsync()
         {
             var webRequester = new HttpWebRequester(ClientUserAgent + " " + WindowsPhoneSystemInfo.GetSystemUserAgent());
             Requester = webRequester.Request;
+
+            return Task.FromResult(true);
         }
 
         /// <summary>