[tumblr] Improve _VALID_URL (Closes #9027)

youtube_dl/extractor/tumblr.py

@@ -8,7 +8,7 @@ from ..utils import int_or_none
 
 
 class TumblrIE(InfoExtractor):
-    _VALID_URL = r'https?://(?P<blog_name>.*?)\.tumblr\.com/(?:post|video)/(?P<id>[0-9]+)(?:$|[/?#])'
+    _VALID_URL = r'https?://(?P<blog_name>[^/?#&]+)\.tumblr\.com/(?:post|video)/(?P<id>[0-9]+)(?:$|[/?#])'
     _TESTS = [{
         'url': 'http://tatianamaslanydaily.tumblr.com/post/54196191430/orphan-black-dvd-extra-behind-the-scenes',
         'md5': '479bb068e5b16462f5176a6828829767',