psc-bundle: removes require unexpectedly in FFI

[ethul]

Consider the following setup:

-- A.purs
module A where

foreign import data React :: *

foreign import y :: React

// A.js
// module A

var x = require('react');

function y() {
  return x.react;
}
exports.y = y();

../psc0.8.0-rc.1/purescript/psc -r ../ *.*
../psc0.8.0-rc.1/purescript/psc-bundle -r ../ -m A output/**/*.js

var PS = { };
(function(exports) {


  function y() {
    return x.react;
  }
  exports.y = y();

})(PS["A"] = PS["A"] || {});
(function(exports) {
  // Generated by psc version 0.8.0.0
  "use strict";
  var $foreign = PS["A"];
  exports["y"] = $foreign.y;;

})(PS["A"] = PS["A"] || {});

The statement var x = require('react'); is removed from the output unexpectedly. I hope the above is clear, please let me know if I can provide more information. Note that I get the same behaviour using 0.7.6.1.