Merge pull request #4074 from cvium/fix_tmdb_null

Fix null exception in tmdb episode provider

MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbEpisodeProvider.cs

@@ -109,7 +109,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 item.ParentIndexNumber = info.ParentIndexNumber;
                 item.IndexNumberEnd = info.IndexNumberEnd;
 
-                if (response.External_Ids.Tvdb_Id > 0)
+                if (response.External_Ids != null && response.External_Ids.Tvdb_Id > 0)
                 {
                     item.SetProviderId(MetadataProvider.Tvdb, response.External_Ids.Tvdb_Id.Value.ToString(CultureInfo.InvariantCulture));
                 }

MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeasonProvider.cs

@@ -75,7 +75,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
 
                     result.Item.Overview = seasonInfo.Overview;
 
-                    if (seasonInfo.External_Ids.Tvdb_Id > 0)
+                    if (seasonInfo.External_Ids != null && seasonInfo.External_Ids.Tvdb_Id > 0)
                     {
                         result.Item.SetProviderId(MetadataProvider.Tvdb, seasonInfo.External_Ids.Tvdb_Id.Value.ToString(CultureInfo.InvariantCulture));
                     }

MediaBrowser.Providers/Plugins/Tmdb/TV/TmdbSeriesProvider.cs

@@ -92,7 +92,7 @@ namespace MediaBrowser.Providers.Plugins.Tmdb.TV
                 remoteResult.SetProviderId(MetadataProvider.Tmdb, obj.Id.ToString(_usCulture));
                 remoteResult.SetProviderId(MetadataProvider.Imdb, obj.External_Ids.Imdb_Id);
 
-                if (obj.External_Ids.Tvdb_Id > 0)
+                if (obj.External_Ids != null && obj.External_Ids.Tvdb_Id > 0)
                 {
                     remoteResult.SetProviderId(MetadataProvider.Tvdb, obj.External_Ids.Tvdb_Id.Value.ToString(_usCulture));
                 }