Fixed: NullReferenceException manually importing an unparseable release

Fixes Sentry LIDARR-GY

(cherry picked from commit 702480852e742c39edacbe40977837381dc884ba)

src/NzbDrone.Core/MediaFiles/TrackImport/Manual/ManualImportService.cs

@@ -384,7 +384,17 @@ namespace NzbDrone.Core.MediaFiles.TrackImport.Manual
                     }
                 }
 
-                if (groupedTrackedDownload.Select(c => c.ImportResult).Count(c => c.Result == ImportResultType.Imported) >= Math.Max(1, trackedDownload.RemoteAlbum.Albums.Count))
+                var remoteTrackCount = Math.Max(1,
+                    trackedDownload.RemoteAlbum?.Albums.Sum(x =>
+                        x.AlbumReleases.Value.Where(y => y.Monitored).Sum(z => z.TrackCount)) ?? 1);
+
+                var importResults = groupedTrackedDownload.Select(x => x.ImportResult).ToList();
+                var importedTrackCount = importResults.Where(c => c.Result == ImportResultType.Imported)
+                    .SelectMany(c => c.ImportDecision.Item.Tracks)
+                    .Count();
+                var allTracksImported = importResults.All(c => c.Result == ImportResultType.Imported) || importedTrackCount >= remoteTrackCount;
+
+                if (allTracksImported)
                 {
                     trackedDownload.State = TrackedDownloadState.Imported;
                     _eventAggregator.PublishEvent(new DownloadCompletedEvent(trackedDownload, importArtist.Id));