Replace Vector with ArrayList for performance improvements

I could not figure out, why these two methods are necessary.

Author: TobiGr

extractor/src/main/java/org/schabi/newpipe/extractor/comments/CommentsInfoItemsCollector.java

@@ -4,6 +4,7 @@
 import org.schabi.newpipe.extractor.InfoItemsCollector;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Vector;
 
@@ -95,7 +96,7 @@ public void commit(CommentsInfoItemExtractor extractor) {
     }
 
     public List<CommentsInfoItem> getCommentsInfoItemList() {
-        List<CommentsInfoItem> siiList = new Vector<>();
+        List<CommentsInfoItem> siiList = new ArrayList<>();
         for (InfoItem ii : super.getItems()) {
             if (ii instanceof CommentsInfoItem) {
                 siiList.add((CommentsInfoItem) ii);

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

@@ -5,6 +5,7 @@
 import org.schabi.newpipe.extractor.exceptions.FoundAdException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 
+import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Vector;
@@ -111,7 +112,7 @@ public void commit(StreamInfoItemExtractor extractor) {
     }
 
     public List<StreamInfoItem> getStreamInfoItemList() {
-        List<StreamInfoItem> siiList = new Vector<>();
+        List<StreamInfoItem> siiList = new ArrayList<>();
         for (InfoItem ii : super.getItems()) {
             if (ii instanceof StreamInfoItem) {
                 siiList.add((StreamInfoItem) ii);