Fixed: Resource leakage inside HttpClient.

src/NzbDrone.Common/Http/HttpClient.cs

@@ -226,12 +226,14 @@ namespace NzbDrone.Common.Http
                 _logger.Debug("Downloading [{0}] to [{1}]", url, fileName);
 
                 var stopWatch = Stopwatch.StartNew();
-                var webClient = new GZipWebClient();
+                using (var webClient = new GZipWebClient())
+                {
                     webClient.Headers.Add(HttpRequestHeader.UserAgent, UserAgentBuilder.UserAgent);
                     webClient.DownloadFile(url, fileName);
                     stopWatch.Stop();
                     _logger.Debug("Downloading Completed. took {0:0}s", stopWatch.Elapsed.Seconds);
                 }
+            }
             catch (WebException e)
             {
                 _logger.Warn("Failed to get response from: {0} {1}", url, e.Message);