RFR: 8314265: Fix -Wconversion warnings in miscellaneous runtime code [v7]

[Christian Hagedorn]

On Wed, 16 Aug 2023 13:43:34 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I've quickly skimmed through the usages of `read_uleb128`. We only seem to be reading either directly into a proper `uint64_t` or we are reading 4 bytes (i.e. `check_size = 4`). In the latter case, we could either:
>> - add a `static_cast` for the read value when storing it into a 32 bit field, as for example for `isa` above (i.e. `_state->_isa = static_cast<uint32_t>(isa)`).
>> - provide a 32 bit `read_uleb128()` version that hides the casting.
>> 
>> I guess it's fine to just go with a `static_cast` when storing to a field for the few cases we have.
>
> Thanks Christian.  I'll revert to use the static cast.  One of the cases has a comment why.

That looks good!

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PR Review Comment: https://git.openjdk.org/jdk/pull/15233#discussion_r1296820975