Correct small whitespace inconsistency, lost while renaming variables.
3 var x = eval(str); yield x[0];
5 for (var i = 0; i < 5; i++)
6 assertEq(foo("[4,5,6]").next(), 4);
7 for (var i = 0; i < 5; i++)
8 assertEq(foo("arguments").next(), "arguments");