Add requested changes.

Author: FireMasterK

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeChannelExtractor.java

@@ -61,6 +61,8 @@ public class YoutubeChannelExtractor extends ChannelExtractor {
     private JsonObject initialData;
     private JsonObject videoTab;
 
+    private static final long UNKNOWN_SUBSCRIBER_COUNT = -1;
+
     /**
      * Some channels have response redirects and the only way to reliably get the id is by saving it.
      * <p>
@@ -281,7 +283,7 @@ public long getSubscriberCount() throws ParsingException {
                 throw new ParsingException("Could not get subscriber count", e);
             }
         } else {
-            return ITEM_COUNT_UNKNOWN;
+            return UNKNOWN_SUBSCRIBER_COUNT;
         }
     }
 

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

@@ -45,7 +45,6 @@
 import java.time.format.DateTimeFormatter;
 import java.util.*;
 
-import static org.schabi.newpipe.extractor.ListExtractor.ITEM_COUNT_UNKNOWN;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.*;
 import static org.schabi.newpipe.extractor.utils.Utils.EMPTY_STRING;
 import static org.schabi.newpipe.extractor.utils.Utils.UTF_8;
@@ -104,6 +103,8 @@ public static class DeobfuscateException extends ParsingException {
     @Nullable
     private List<SubtitlesStream> subtitles = null;
 
+    private static final long UNKNOWN_SUBSCRIBER_COUNT = -1;
+
     public YoutubeStreamExtractor(final StreamingService service, final LinkHandler linkHandler) {
         super(service, linkHandler);
     }
@@ -448,7 +449,7 @@ public long getUploaderSubscriberCount() throws ParsingException {
                 throw new ParsingException("Could not get uploader subscriber count", e);
             }
         } else {
-            return ITEM_COUNT_UNKNOWN;
+            return UNKNOWN_SUBSCRIBER_COUNT;
         }
     }