Commit 4a0cd0a484941716f7dfb3b6ea974555eb50792d

more asserts
  
315315
316316 m_tracksForAlbums[artistPosition][albumPosition] = batchNewTracks;
317317
318 Q_ASSERT(m_trackItems.at(artistPosition).count() == m_tracksForAlbums.at(artistPosition).count());
318319 Q_ASSERT(m_trackItems.at(artistPosition).at(albumPosition).count() == m_tracksForAlbums.at(artistPosition).at(albumPosition).count());
319320
320321 QVector< QSharedPointer<Item> >& trackItems = m_trackItems[artistPosition][albumPosition];