Fight with hiredis API

src/libstat/backends/redis_backend.c

@@ -531,6 +531,9 @@ rspamd_redis_learned (redisAsyncContext *c, gpointer r, gpointer priv)
 		rspamd_upstream_fail (rt->selected);
 		rspamd_session_remove_event (task->s, rspamd_redis_fin_learn, rt);
 	}
+
+	redisAsyncFree (rt->redis);
+	rt->conn_state = RSPAMD_REDIS_DISCONNECTED;
 }
 
 gpointer