RFR(XS): 8214728: Unnecessary InstanceKlass::cast at few places

[coleen.phillimore at oracle.com]

Thank you for doing this.  I'd also say this looks trivial and can be 
checked in with us 3! reviewers.
Coleen

On 12/4/18 2:23 PM, Calvin Cheung wrote:
> Thanks for your quick review, Lois and Jiangli.
>
> Calvin
>
> On 12/4/18, 11:14 AM, Jiangli Zhou wrote:
>> +1
>>
>> Thanks,
>>
>> Jiangli
>>
>>
>> On 12/4/18 11:07 AM, Lois Foltan wrote:
>>> Looks good.
>>> Lois
>>>
>>> On 12/4/2018 2:00 PM, Calvin Cheung wrote:
>>>> bug: https://bugs.openjdk.java.net/browse/JDK-8214728
>>>> webrev: http://cr.openjdk.java.net/~ccheung/8214728/webrev.00/
>>>>
>>>> A simple change to remove unnecessary InstanceKlass::cast at 3 places.
>>>>
>>>> Ran hs-tier{1,2,3} tests.
>>>>
>>>> thanks,
>>>> Calvin
>>>
>>