Trim SQL statement to prevent match issues

My SQL statement looked similar to this:

```php
\Database::getInstance()->prepare("
    UPDATE tl_member %s WHERE id=?
")->set(array('published'=>'1'))->execute(1);
```

Due to the line break and whitespace before *UPDATE*, the `set()` method does not recognize it. It uses the first 6 chars to compare against *INSERT* or *UPDATE*.