Description:
------------
The Reflection API has a (minor) bug regarding the getStartLine() function in ReflectionClass. When the reflected class is not a subclass and does not implement any interfaces, the result of getStartLine() is one line off.

Reproduce code:
---------------
<?
    class a
    {
    }

    class b extends a
    {
    }

    $ref1 = new ReflectionClass('a');
    $ref2 = new ReflectionClass('b');
    echo $ref1->getStartLine() . "\n";
    echo $ref2->getStartLine() . "\n";
?>

Expected result:
----------------
2
6

Actual result:
--------------
3
6