Merge pull request #6004 from tomachalek/supp2861_b

Fix - make sure variable `data` is initialized

lib/plugins/default_token_connect/backends/treq_v1.py

@@ -149,6 +149,7 @@ async def fetch(self, corpora, maincorp, token_id, num_tokens, query_args, lang,
             treq_link = (self.mk_backlink_addr() + '/index.php', t_args)
             ta_args = self.mk_api_args(
                 lang1=args['lang1'], lang2=args['lang2'], groups=args['groups'], lemma=args['lemma'])
+            data = None
 
             try:
                 logging.getLogger(__name__).debug('Treq request args: {0}'.format(ta_args))