Fixed Last track of queue playing again when gapless playback is on

app/src/main/java/code/name/monkey/retromusic/service/MusicService.kt

@@ -697,6 +697,7 @@ class MusicService : MediaBrowserServiceCompat(),
 
     override fun onTrackWentToNext() {
         if (pendingQuit || repeatMode == REPEAT_MODE_NONE && isLastTrack) {
+            playbackManager.setNextDataSource(null)
             pause(false)
             seek(0)
             if (pendingQuit) {

app/src/main/java/code/name/monkey/retromusic/service/PlaybackManager.kt

@@ -88,7 +88,7 @@ class PlaybackManager(val context: Context) {
         playback?.setDataSource(song, force, completion)
     }
 
-    fun setNextDataSource(trackUri: String) {
+    fun setNextDataSource(trackUri: String?) {
         playback?.setNextDataSource(trackUri)
     }