stmt.finalize(callback) can't promise the sequence

codes like:

``` javascript
db.serialize();
var result = []
stmt.prepare(...);
stmt.each(parameter, function(err, row) {
    result.push(row['some_column']);
});
stmt.finalize(function () {
    console.log(JSON.stringify(result));
}
```

but result is missing some rows

it behaves right on Windows7 x64
but behaves not right on Centos 4.3 x64
