func headerClone()

in helpers.go [30:38]

• 9 lines of code
• 2 McCabe index (conditional complexity)

func headerClone(h http.Header) http.Header {
	h2 := make(http.Header, len(h))
	for k, vv := range h {
		vv2 := make([]string, len(vv))
		copy(vv2, vv)
		h2[k] = vv2
	}
	return h2
}