RFR (trivial) 8210861: Move assert to help diagnose rare RedefineStress crash

[coleen.phillimore at oracle.com]

Thanks Serguei!
Coleen

On 9/18/18 4:04 PM, serguei.spitsyn at oracle.com wrote:
> +1
>
> Thanks,
> Serguei
>
> On 9/18/18 10:07 AM, Lois Foltan wrote:
>> Looks good & trivial.
>> Lois
>>
>> On 9/18/2018 12:10 PM, coleen.phillimore at oracle.com wrote:
>>> Summary: assert that Method being marked on stack hasn't been missed 
>>> by previous metadata walk
>>>
>>> Ran hs-tier1-7 with no failures, which is unfortunate because this 
>>> assert will tell me where the Method was missed from previous walk.
>>>
>>> open webrev at http://cr.openjdk.java.net/~coleenp/8210861.01/webrev
>>> bug link https://bugs.openjdk.java.net/browse/JDK-8210861
>>>
>>> Thanks,
>>> Coleen
>>
>