Return an empty title string for YouTube videos with no title

Author: G-flat

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

@@ -130,10 +130,15 @@ public String getUrl() throws ParsingException {
 
     @Override
     public String getName() throws ParsingException {
-        final String name = getTextFromObject(videoInfo.getObject("title"));
+        final JsonObject title = videoInfo.getObject("title");
+        final String name = getTextFromObject(title);
         if (!isNullOrEmpty(name)) {
             return name;
         }
+        // Videos can have no title, e.g. https://www.youtube.com/watch?v=nc1kN8ZSfGQ
+        if (!isNullOrEmpty(title) && !title.has("runs")) {
+            return "";
+        }
         throw new ParsingException("Could not get name");
     }