Incorrect resursive record initialization

[vkurchatkin]

Example:

type a = {
  b: b;
}
and b = {
  a: a
};;

let rec a = { b } and b = { a };;

Compiles to:

var a = [];

a[0] = b;

var b = [];

b[0] = a;

Instead of:

var a = [];
var b = [];

a[0] = b;
b[0] = a;