RFR: 8313564: Fix -Wconversion warnings in classfile code [v4]

[Coleen Phillimore]

On Thu, 3 Aug 2023 06:39:19 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix Atomic items_added code.
>
> src/hotspot/share/classfile/symbolTable.cpp line 91:
> 
>> 89: 
>> 90: static volatile int    _items_count = 0;
>> 91: static volatile bool   _has_items_to_clean = false;
> 
> Nit: the extra spaces are not needed now we use a shorter type name

Since I'm reverting the change, it can have extra spaces.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15111#discussion_r1283110902