Fix VM memory allocation optimizations by reducing what we allocate on the heap

internal/builtins/max.go

@@ -20,12 +20,12 @@ func Max(args ...object.Object) object.Object {
 	// TODO: Make this more generic
 	xs := []int{} //make([]int, len(a.Elements))
 	for n, e := range a.Elements {
-		if i, ok := e.(*object.Integer); ok {
+		if i, ok := e.(object.Integer); ok {
 			xs = append(xs, int(i.Value))
 		} else {
 			return newError("item #%d  not an `int` got=%d", n, e.Type())
 		}
 	}
 	sort.Ints(xs)
-	return &object.Integer{Value: int64(xs[len(xs)-1])}
+	return object.Integer{Value: int64(xs[len(xs)-1])}
 }