Improve based on review/feedback.

Author: FireMasterK

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

@@ -168,7 +168,8 @@ public String getUploaderUrl() throws ParsingException {
     public String getUploaderAvatarUrl() throws ParsingException {
 
         if(videoInfo.has("channelThumbnailSupportedRenderers")) {
-            return JsonUtils.getArray(videoInfo, "channelThumbnailSupportedRenderers.channelThumbnailWithLinkRenderer.thumbnail.thumbnails").getObject(0).getString("url");
+            return JsonUtils.getArray(videoInfo, "channelThumbnailSupportedRenderers.channelThumbnailWithLinkRenderer.thumbnail.thumbnails")
+                    .getObject(0).getString("url");
         }
 
         return null;

extractor/src/main/java/org/schabi/newpipe/extractor/stream/StreamInfoItem.java

@@ -88,7 +88,7 @@ public String getUploaderAvatarUrl() {
         return uploaderAvatarUrl;
     }
 
-    public void setUploaderAvatarUrl(String uploaderAvatarUrl) {
+    public void setUploaderAvatarUrl(final String uploaderAvatarUrl) {
         this.uploaderAvatarUrl = uploaderAvatarUrl;
     }
 

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/search/YoutubeSearchExtractorTest.java

@@ -338,7 +338,7 @@ public static void setUp() throws Exception {
         @Test
         public void testUploaderAvatar() throws IOException, ExtractionException {
             final List<InfoItem> items = extractor.getInitialPage().getItems();
-            for (InfoItem item : items) {
+            for (final InfoItem item : items) {
                 assertNotNull(((StreamInfoItem) item).getUploaderAvatarUrl());
             }
         }