func (s *Session) Prepare_request(request *models.Request) (*models.PrepareRequest, error)中合并header是多余的

[mawserver]

func (s *Session) Prepare_request(request *models.Request) (*models.PrepareRequest, error) {
	var err error
	params := merge_setting(request.Params, s.Params).(*url.Params)
	headers := merge_setting(request.Headers, s.Headers).(*http.Header)
	c := request.Cookies
	if c == nil {
		c, _ = cookiejar.New(nil)
	}
	cookies, _ := cookiejar.New(nil)
	merge_cookies(request.Url, cookies, s.Cookies)
	merge_cookies(request.Url, cookies, c)
	auth := merge_setting(request.Auth, s.Auth).([]string)
	p := models.NewPrepareRequest()
	err = p.Prepare(
		request.Method,
		request.Url,
		params,
		headers,
		cookies,
		request.Data,
		request.Files,
		request.Json,
		request.Body,
		auth,
	)
	if err != nil {
		return p, err
	}
	return p, nil
}

在代码里面合并了session的header是多余的，这会导致请求莫名多出前面的header，无论是session.request还是requests.request。这会导致freeMemory之后没有及时回收的话会掺杂乱七八糟的头部