RFR: 8210066: [JVMCI] iterateFrames uses wrong GrowableArray API for appending

[Christian Thalinger]

Looks good.

> On Aug 31, 2018, at 11:28 AM, Doug Simon <doug.simon at oracle.com> wrote:
> 
> Requesting one more review for this small change please.
> 
> -Doug
> 
>> On 29 Aug 2018, at 21:49, dean.long at oracle.com wrote:
>> 
>> Looks good!
>> 
>> dl
>> 
>> On 8/29/18 8:06 AM, Doug Simon wrote:
>>> Please review this small patch to fix an incorrect usage of GrowableArray that can leads to an assertion failure in a fastdebug VM.
>>> 
>>> Many thanks to Gilles Duboscq for the test showing the problem and confirming that the fix works.
>>> 
>>> https://bugs.openjdk.java.net/browse/JDK-8210066
>>> http://cr.openjdk.java.net/~dnsimon/8210066/
>>> 
>>> Testing: hs-tier3-graal
>>> 
>>> -Doug
>> 
>