Squiz.SelfMemberReference.NotUsed not detected if leading namespace separator is used

[nkovacs]

\Foo should be replaced with self, but it's not detected by the sniff because of the leading namespace separator:

class Foo
{
    public static function bar()
    {
        \Foo::baz();
    }

    public static function baz()
    {
        echo 'foobar';
    }
}

Foo::bar();

Failing test: nkovacs@2847398

[gsherwood]

Thanks for the report. Fixed now.