fix get_redis_from_config()

rq/cli/helpers.py

@@ -26,7 +26,7 @@ def read_config_file(module):
                  if k.upper() == k])
 
 
-def get_redis_from_config(settings, connection_class):
+def get_redis_from_config(settings, connection_class=StrictRedis):
     """Returns a StrictRedis instance from a dictionary of settings."""
     if settings.get('REDIS_URL') is not None:
         return connection_class.from_url(settings['REDIS_URL'])