message: fix potential memory leak in  WiFiManagerParameter::setValue
diff: @@ -86,8 +86,12 @@ void WiFiManagerParameter::setValue(const char *defaultValue, int length) {
  // // return false; //@todo bail
  // }
  + 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) {
  