"reflect.Value.Slice3: slice of unaddressable array" when slicing arrays when iterating over maps

[zapateo]

This code:

package main

func main() {

	m := map[string][3]int{}
	m["x"] = [3]int{10, 20, 30}

	for _, v := range m {
		s := v[:]
		_ = s
	}

}

should be valid, but it panics the Scriggo runtime with this error:

reflect.Value.Slice3: slice of unaddressable array

Note that this issue may be partially related to #376.