[movieclips] Fix _VALID_URL

youtube_dl/extractor/movieclips.py

@@ -11,7 +11,7 @@ from ..utils import (
 
 
 class MovieClipsIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www.)?movieclips\.com/videos/.+-(?P<id>\d+)(?:\?|$)'
+    _VALID_URL = r'https?://(?:www\.)?movieclips\.com/videos/.+-(?P<id>\d+)(?:\?|$)'
     _TEST = {
         'url': 'http://www.movieclips.com/videos/warcraft-trailer-1-561180739597',
         'md5': '42b5a0352d4933a7bd54f2104f481244',