RFR: 8313882: Fix -Wconversion warnings in runtime code [v2]

[Coleen Phillimore]

On Wed, 9 Aug 2023 01:32:37 GMT, Dean Long <dlong at openjdk.org> wrote:

>> I couldn't change that one because there isn't a parse_uint() version of this:
>>       if (!parse_uintx(tail, &max_tenuring_thresh, 0)) {
>> Which calls parse_integer into a 64 bit value.
>
> Isn't parse_integer() used to parse int flags?  It's a template.

Ok, I fixed parse_uintx in Arguments to parse_uint then.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15177#discussion_r1288440009