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

[serguei.spitsyn at oracle.com]

+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
>