Fixed issue with deleting series

NzbDrone.Core/Jobs/DeleteSeriesJob.cs

@@ -34,7 +34,13 @@ namespace NzbDrone.Core.Jobs
 
         public void Start(ProgressNotification notification, dynamic options)
         {
-            DeleteSeries(notification, options.SeriesId, options.DeleteFiless);
+            if (options == null)
+                throw new ArgumentNullException("options");
+
+            if (options.SeriesId == 0)
+                throw new ArgumentNullException("options.SeriesId");
+
+            DeleteSeries(notification, options.SeriesId, options.DeleteFiles);
         }
 
         private void DeleteSeries(ProgressNotification notification, int seriesId, bool deleteFiles)