fixed: sonar issues.

Author: karyogamy

app/src/main/java/org/schabi/newpipe/player/mediasource/FailedMediaSource.java

@@ -22,7 +22,7 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-public class FailedMediaSource extends CompositeMediaSource<Void> implements ManagedMediaSource {
+public class FailedMediaSource extends CompositeMediaSource<Integer> implements ManagedMediaSource {
     /**
      * Play 2 seconds of silenced audio when a stream fails to resolve due to a known issue,
      * such as {@link org.schabi.newpipe.extractor.exceptions.ExtractionException}.
@@ -104,7 +104,7 @@ protected void prepareSourceInternal(@Nullable final TransferListener mediaTrans
         super.prepareSourceInternal(mediaTransferListener);
         Log.e(TAG, "Loading failed source: ", error);
         if (error instanceof FailedMediaSourceException) {
-            prepareChildSource(null, source);
+            prepareChildSource(0, source);
         }
     }
 
@@ -118,7 +118,7 @@ public void maybeThrowSourceInfoRefreshError() throws IOException {
     }
 
     @Override
-    protected void onChildSourceInfoRefreshed(final Void id,
+    protected void onChildSourceInfoRefreshed(final Integer id,
                                               final MediaSource mediaSource,
                                               final Timeline timeline) {
         refreshSourceInfo(timeline);

app/src/main/java/org/schabi/newpipe/player/mediasource/LoadedMediaSource.java

@@ -14,7 +14,7 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-public class LoadedMediaSource extends CompositeMediaSource<Void> implements ManagedMediaSource {
+public class LoadedMediaSource extends CompositeMediaSource<Integer> implements ManagedMediaSource {
     private final MediaSource source;
     private final PlayQueueItem stream;
     private final MediaItem mediaItem;
@@ -42,11 +42,11 @@ private boolean isExpired() {
     @Override
     protected void prepareSourceInternal(@Nullable final TransferListener mediaTransferListener) {
         super.prepareSourceInternal(mediaTransferListener);
-        prepareChildSource(null, source);
+        prepareChildSource(0, source);
     }
 
     @Override
-    protected void onChildSourceInfoRefreshed(final Void id,
+    protected void onChildSourceInfoRefreshed(final Integer id,
                                               final MediaSource mediaSource,
                                               final Timeline timeline) {
         refreshSourceInfo(timeline);