RFR: 8311098: Change comment in verificationType.hpp to refer to _sym

[Ioi Lam]

On Thu, 18 Apr 2024 00:24:34 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

>> Please review this trivial comment change.
>> 
>> The related code was changed during PermGen removal. Symbols used to be oops. Now they are metaspace objects.
>
> Looks good and trivial.

Thanks @calvinccheung for the review

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PR Comment: https://git.openjdk.org/jdk/pull/18830#issuecomment-2062929027