RFR 8235586: Shenandoah: Traversal GC still uses old CLD::oops_do API

[Roman Kennke]

Yes, looks good & trivial!

Thanks,
Roman


> Travesal GC did not update CLD::oops_do() API after JDK-8210330
> 
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8235586
> Webrev: http://cr.openjdk.java.net/~zgu/JDK-8235586/webrev.00/
> 
> Test:
>   hotspot_gc_shenandoah (fastdebug and release)
> 
> Thanks,
> 
> -Zhengyu
>