From 28d8a41219bd7a4876675bbeb5e56bd358afcdd8 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Tue, 20 Feb 2018 02:13:16 +0300
Subject: [PATCH] ESP8266WiFi: zero-initialise scan_config structure

Fixes #4394
---
 libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp b/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp
index a824951e6..f83049c0b 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFiScan.cpp
@@ -83,9 +83,7 @@ int8_t ESP8266WiFiScanClass::scanNetworks(bool async, bool show_hidden) {
     scanDelete();
 
     struct scan_config config;
-    config.ssid = 0;
-    config.bssid = 0;
-    config.channel = 0;
+    memset(&config, 0, sizeof(config));
     config.show_hidden = show_hidden;
     if(wifi_station_scan(&config, reinterpret_cast<scan_done_cb_t>(&ESP8266WiFiScanClass::_scanDone))) {
         ESP8266WiFiScanClass::_scanComplete = false;