From bd59d98b91c4e6d40d76d838597d01b4e82fc713 Mon Sep 17 00:00:00 2001
From: Christophe Painchaud <shellescape@gmail.com>
Date: Thu, 4 Feb 2021 23:29:25 +0100
Subject: [PATCH] fix potential memory leak in  WiFiManagerParameter::setValue

---
 WiFiManager.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/WiFiManager.cpp b/WiFiManager.cpp
index f751dae..6782b96 100644
--- a/WiFiManager.cpp
+++ b/WiFiManager.cpp
@@ -86,8 +86,12 @@ void WiFiManagerParameter::setValue(const char *defaultValue, int length) {
   //   // return false; //@todo bail 
   // }
 
-  _length = length;
-  _value  = new char[_length + 1]; 
+  if(_length != length){
+    _length = length;
+    if( _value != nullptr)
+      delete _value;
+    _value  = new char[_length + 1];  
+  }
   memset(_value, 0, _length + 1); // explicit null
   
   if (defaultValue != NULL) {