From 732db594929965c7d298b6257fa74cfbd1be0398 Mon Sep 17 00:00:00 2001
From: Edd Inglis <einglis@users.noreply.github.com>
Date: Sun, 13 Mar 2022 21:34:42 +0000
Subject: [PATCH] Catch a possible null-dereference (#8508)

---
 libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp b/libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp
index 741c70180..df709bdd2 100755
--- a/libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp
+++ b/libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp
@@ -254,6 +254,12 @@ HTTPUpdateResult ESP8266HTTPUpdate::handleUpdate(HTTPClient& http, const String&
                 }
 
                 WiFiClient * tcp = http.getStreamPtr();
+                if (!tcp) {
+                    DEBUG_HTTP_UPDATE("[httpUpdate] WiFiClient connection unexpectedly absent\n");
+                    _setLastError(HTTPC_ERROR_CONNECTION_LOST);
+                    http.end();
+                    return HTTP_UPDATE_FAILED;
+                }
 
                 if (_closeConnectionsOnUpdate) {
                     WiFiUDP::stopAll();