ufuzz failure

[alexlamsl]

// original code
// (beautified)
var _calls_ = 10, a = 100, b = 10, c = 0;

var a_1 = --b + (typeof f1 == "function" && --_calls_ >= 0 && f1()), bar = a_1 && a_1[function b() {}];

console.log(null, a, b, c, Infinity, NaN, undefined);

// uglified code
// (beautified)
var n = 10;

--n, "function" == typeof f1 && f1(), e && function n() {};

console.log(null, 100, n, 0, Infinity, NaN, undefined);

original result:
null 100 9 0 Infinity NaN undefined

uglified result:
evalmachine.<anonymous>:1
(function(){var n=10;--n,"function"==typeof f1&&f1(),e&&function n(){};console.log(null,100,n,0,Infinity,NaN,undefined);})()
                                                     ^

ReferenceError: e is not defined
    at evalmachine.<anonymous>:1:54
    at evalmachine.<anonymous>:1:123
    at Script.runInContext (vm.js:127:20)
    at Object.runInContext (vm.js:290:6)