From 5067e220cafcd865f49c57085065d18d710d7ae1 Mon Sep 17 00:00:00 2001
From: chundonglinlin <chundonglinlin@163.com>
Date: Mon, 20 Mar 2023 12:51:02 +0800
Subject: [PATCH] HttpConn: judge nb_chunk no memory address. (#3465)

Co-authored-by: john <hondaxiao@tencent.com>
---
 trunk/src/protocol/srs_protocol_http_conn.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/trunk/src/protocol/srs_protocol_http_conn.cpp b/trunk/src/protocol/srs_protocol_http_conn.cpp
index dee58c370..a885065b4 100644
--- a/trunk/src/protocol/srs_protocol_http_conn.cpp
+++ b/trunk/src/protocol/srs_protocol_http_conn.cpp
@@ -1162,7 +1162,9 @@ srs_error_t SrsHttpResponseReader::read_chunked(void* data, size_t nb_data, ssiz
     if (nb_chunk <= 0) {
         // for the last chunk, eof.
         is_eof = true;
-        *nb_read = 0;
+        if (nb_read) {
+            *nb_read = 0;
+        }
     } else {
         // for not the last chunk, there must always exists bytes.
         // left bytes in chunk, read some.