catch 404's on requests to banners.xml

MediaBrowser.Controller/Providers/TV/RemoteSeriesProvider.cs

@@ -360,6 +360,8 @@ namespace MediaBrowser.Controller.Providers.TV
                 string url = string.Format("http://www.thetvdb.com/api/" + TVUtils.TvdbApiKey + "/series/{0}/banners.xml", seriesId);
                 var images = new XmlDocument();
 
+                try
+                {
                     using (var imgs = await HttpClient.Get(new HttpRequestOptions
                     {
                         Url = url,
@@ -371,6 +373,18 @@ namespace MediaBrowser.Controller.Providers.TV
                     {
                         images.Load(imgs);
                     }
+                }
+                catch (HttpException ex)
+                {
+                    if (ex.StatusCode.HasValue && ex.StatusCode.Value == HttpStatusCode.NotFound)
+                    {
+                        // If a series has no images this will produce a 404.
+                        // Return gracefully so we don't keep retrying on subsequent scans
+                        return;
+                    }
+
+                    throw;
+                }
 
                 if (images.HasChildNodes)
                 {