From a0fbaedb5399f623ed8470ce5e2cfa5d610bc21e Mon Sep 17 00:00:00 2001
From: "Dirk O. Kaar" <dok@dok-net.net>
Date: Wed, 27 Nov 2019 12:23:56 +0100
Subject: [PATCH] Uninitialized stack object can have unintended bad values

---
 cores/esp8266/HardwareSerial.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp8266/HardwareSerial.cpp b/cores/esp8266/HardwareSerial.cpp
index 194a0553e5..5f7ea141c0 100644
--- a/cores/esp8266/HardwareSerial.cpp
+++ b/cores/esp8266/HardwareSerial.cpp
@@ -133,7 +133,7 @@ unsigned long HardwareSerial::testBaudrate()
 unsigned long HardwareSerial::detectBaudrate(time_t timeoutMillis)
 {
     esp8266::polledTimeout::oneShotFastMs timeOut(timeoutMillis);
-    unsigned long detectedBaudrate;
+    unsigned long detectedBaudrate = 0;
     while (!timeOut) {
         if ((detectedBaudrate = testBaudrate())) {
           break;