Exit Artist & Album details if song count is 0, in case Songs may have got deleted for those Album or Artist

app/src/main/java/code/name/monkey/retromusic/fragments/albums/AlbumDetailsFragment.kt

@@ -206,6 +206,7 @@ class AlbumDetailsFragment : AbsMainActivityFragment(R.layout.fragment_album_det
 
     private fun showAlbum(album: Album) {
         if (album.songs.isEmpty()) {
+            findNavController().navigateUp()
             return
         }
         this.album = album

app/src/main/java/code/name/monkey/retromusic/fragments/artists/AbsArtistDetailsFragment.kt

@@ -141,6 +141,10 @@ abstract class AbsArtistDetailsFragment : AbsMainActivityFragment(R.layout.fragm
     }
 
     private fun showArtist(artist: Artist) {
+        if (artist.songCount == 0) {
+            findNavController().navigateUp()
+            return
+        }
         this.artist = artist
         loadArtistImage(artist)
         if (RetroUtil.isAllowedToDownloadMetadata(requireContext())) {