Check whether actors_data has been found

youtube_dl/extractor/xvideos.py

@@ -154,6 +154,7 @@ class XVideosIE(InfoExtractor):
 
         actors_data = re.findall(r'href="(?P<actor_url>/pornstars/.+?)" class="btn btn-default label profile hover-name"><span class="name">(?P<actor_name>.+?)</span>', webpage)
         actors = []
+        if actors_data is not None:
             for actor_tuple in actors_data:
                 actors.append({
                     'given_name': actor_tuple[1],