[pandatv] fix condition syntax

youtube_dl/extractor/pandatv.py

@@ -36,7 +36,7 @@ class PandaTVIE(InfoExtractor):
             'https://www.panda.tv/api_room_v2?roomid=%s' % video_id, video_id)
 
         error_code = config.get('errno', 0)
-        if error_code is not 0:
+        if error_code != 0:
             raise ExtractorError(
                 '%s returned error %s: %s'
                 % (self.IE_NAME, error_code, config['errmsg']),