Incorrect inlining within `with` statement

``` js
var x = 0;
var myObj = {x : "obj"};
function f1(){
var x = 1;
function f2(){
with(myObj){
return x;
}
};
return f2();
}
```

minfies to:

``` js
var x = 0,
myObj = { x: "obj" };

function f1() {
;
return function () {
with (myObj) {
return 1;
}
}();
}
```

This should be `return "obj"` not `return 1`