put request message disposal back in

MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs

@@ -161,19 +161,19 @@ namespace MediaBrowser.Common.Implementations.HttpClientManager
 
             options.CancellationToken.ThrowIfCancellationRequested();
 
-            var message = GetHttpRequestMessage(options);
-
-            //if (options.EnableResponseCache && cachedInfo != null)
-            //{
-            //    if (!string.IsNullOrEmpty(cachedInfo.Etag))
-            //    {
-            //        message.Headers.Add("If-None-Match", cachedInfo.Etag);
-            //    }
-            //    else if (cachedInfo.LastModified.HasValue)
-            //    {
-            //        message.Headers.IfModifiedSince = new DateTimeOffset(cachedInfo.LastModified.Value);
-            //    }
-            //}
+            using (var message = GetHttpRequestMessage(options))
+            {
+                if (options.EnableResponseCache && cachedInfo != null)
+                {
+                    if (!string.IsNullOrEmpty(cachedInfo.Etag))
+                    {
+                        message.Headers.Add("If-None-Match", cachedInfo.Etag);
+                    }
+                    else if (cachedInfo.LastModified.HasValue)
+                    {
+                        message.Headers.IfModifiedSince = new DateTimeOffset(cachedInfo.LastModified.Value);
+                    }
+                }
 
                 if (options.ResourcePool != null)
                 {
@@ -248,6 +248,8 @@ namespace MediaBrowser.Common.Implementations.HttpClientManager
                 }
             }
 
+        }
+
         /// <summary>
         /// Performs a GET request and returns the resulting stream
         /// </summary>