[Go] Some evaluation orders in multi value assignments are unspecified

reference: https://github.com/go101/go101/wiki/Some-evaluation-orders-in-multi-value-assignments-are-unspecified
don't do this:

package main

import "fmt"

func f(p *int) int {
 *p = 123
 return *p
}

func main() {
 var x int
 y, z := x, f(&x)  // no no, evaluation sequence isn't defined.
 fmt.Println(y, z)
}