From a2fcb441884af09123ff148ccf6963740ac4ab9f Mon Sep 17 00:00:00 2001
From: Alex Khokhlov <alex.forth@gmail.com>
Date: Sat, 3 Apr 2021 13:28:19 +0300
Subject: [PATCH] Fix segfault for for session shutdown

---
 src/asio_client_session_impl.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/asio_client_session_impl.cc b/src/asio_client_session_impl.cc
index b96824dd..1d5ab925 100644
--- a/src/asio_client_session_impl.cc
+++ b/src/asio_client_session_impl.cc
@@ -577,7 +577,7 @@ const request *session_impl::submit(boost::system::error_code &ec,
 }
 
 void session_impl::shutdown() {
-  if (stopped_) {
+  if (session_ == nullptr || stopped_) {
     return;
   }