From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 27 Jul 2020 09:17:31 +0000 (+0200)
Subject: quiche: handle calling disconnect twice
X-Git-Tag: curl-7_72_0~80
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=425fa864ce4cc2326996c8fd280ddf61e485ba23;p=thirdparty%2Fcurl.git

quiche: handle calling disconnect twice

Reported-by: lilongyan-huawei on github
Fixes #5726
Closes #5727
---

diff --git a/lib/vquic/quiche.c b/lib/vquic/quiche.c
index be6f15c199..fd9cb8bd34 100644
--- a/lib/vquic/quiche.c
+++ b/lib/vquic/quiche.c
@@ -95,8 +95,14 @@ static CURLcode qs_disconnect(struct quicsocket *qs)
     quiche_h3_config_free(qs->h3config);
   if(qs->h3c)
     quiche_h3_conn_free(qs->h3c);
-  quiche_config_free(qs->cfg);
-  quiche_conn_free(qs->conn);
+  if(qs->cfg) {
+    quiche_config_free(qs->cfg);
+    qs->cfg = NULL;
+  }
+  if(qs->conn) {
+    quiche_conn_free(qs->conn);
+    qs->conn = NULL;
+  }
   return CURLE_OK;
 }