[fox] fix theplatform release url query

youtube_dl/extractor/fox.py

@@ -2,7 +2,10 @@
 from __future__ import unicode_literals
 
 from .common import InfoExtractor
-from ..utils import smuggle_url
+from ..utils import (
+    smuggle_url,
+    update_url_query,
+)
 
 
 class FOXIE(InfoExtractor):
@@ -29,11 +32,12 @@ class FOXIE(InfoExtractor):
 
         release_url = self._parse_json(self._search_regex(
             r'"fox_pdk_player"\s*:\s*({[^}]+?})', webpage, 'fox_pdk_player'),
-            video_id)['release_url'] + '&switch=http'
+            video_id)['release_url']
 
         return {
             '_type': 'url_transparent',
             'ie_key': 'ThePlatform',
-            'url': smuggle_url(release_url, {'force_smil_url': True}),
+            'url': smuggle_url(update_url_query(
+                release_url, {'switch': 'http'}), {'force_smil_url': True}),
             'id': video_id,
         }