From c90b65a72c50aecc1f1afea1e5fab029b1f7c558 Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Wed, 15 Jan 2020 16:46:18 +0100
Subject: [PATCH] Fix potential crash in OpenInputStreamWrapper::Open (fixes
 issue #2808)

---
 libcef/browser/net_service/stream_reader_url_loader.cc | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/libcef/browser/net_service/stream_reader_url_loader.cc b/libcef/browser/net_service/stream_reader_url_loader.cc
index 09f985a6d..d95829825 100644
--- a/libcef/browser/net_service/stream_reader_url_loader.cc
+++ b/libcef/browser/net_service/stream_reader_url_loader.cc
@@ -90,10 +90,11 @@ class OpenInputStreamWrapper
 
   void Open(const RequestId& request_id,
             const network::ResourceRequest& request) {
-    if (!delegate_->OpenInputStream(
-            request_id, request,
-            base::BindOnce(&OpenInputStreamWrapper::OnCallback,
-                           base::WrapRefCounted(this)))) {
+    // |delegate_| may be null if we were canceled.
+    if (delegate_ && !delegate_->OpenInputStream(
+                         request_id, request,
+                         base::BindOnce(&OpenInputStreamWrapper::OnCallback,
+                                        base::WrapRefCounted(this)))) {
       OnCallback(nullptr);
     }
   }