From 3b5361dc1067c36e83ced8fcef5fc785dc09c756 Mon Sep 17 00:00:00 2001
From: Timofey <22733656+holykol@users.noreply.github.com>
Date: Fri, 17 Feb 2023 16:05:44 +0300
Subject: [PATCH] fix: lag can be null (#2448)

see https://github.com/redis/redis/blob/383d902ce68131cf40d6122ce09e305e672e8555/src/t_stream.c#L1456
---
 command.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/command.go b/command.go
index d357e922..fa948489 100644
--- a/command.go
+++ b/command.go
@@ -2057,7 +2057,7 @@ func (cmd *XInfoGroupsCmd) readReply(rd *proto.Reader) error {
 				}
 			case "lag":
 				group.Lag, err = rd.ReadInt()
-				if err != nil {
+				if err != nil && err != Nil {
 					return err
 				}
 			default:
@@ -2367,7 +2367,7 @@ func readStreamGroups(rd *proto.Reader) ([]XInfoStreamGroup, error) {
 				}
 			case "lag":
 				group.Lag, err = rd.ReadInt()
-				if err != nil {
+				if err != nil && err != Nil {
 					return nil, err
 				}
 			case "pel-count":