[tests] flake8

cubicweb_elasticsearch/hooks.py

@@ -108,7 +108,7 @@
             try:
                 # TODO option for async ?
                 es.index(**kwargs)
-            except (ConnectionError, ProtocolError):
+            except (ConnectionError, ProtocolError) as exc:
                 log.warning('Failed to index in hook, could not connect to ES')
             except Exception as exc:
                 log.exception('Failed to index in hook')