[dcn] improve season info extraction

youtube_dl/extractor/dcn.py

@@ -210,12 +210,10 @@ class DCNSeasonIE(InfoExtractor):
             })
 
         show = self._download_json(request, show_id)
-        season_id = season_id or show['default_season']
+        if not season_id:
-        season = {}
+            season_id = show['default_season']
-        for _ in show['seasons']:
+        for season in show['seasons']:
-            if _['id'] == season_id:
+            if season['id'] == season_id:
-                season = _
-                break
                 title = season.get('title_en') or season['title_ar']
 
                 entries = []