[youporn] Fix sources regex

youtube_dl/extractor/youporn.py

@@ -75,7 +75,7 @@ class YouPornIE(InfoExtractor):
         links = []
 
         sources = self._search_regex(
-            r'sources\s*:\s*({.+?})', webpage, 'sources', default=None)
+            r'(?s)sources\s*:\s*({.+?})', webpage, 'sources', default=None)
         if sources:
             for _, link in re.findall(r'[^:]+\s*:\s*(["\'])(http.+?)\1', sources):
                 links.append(link)