RFR: 8286389: Address possibly lossy conversions in jdk.crypto.ec

[Xue-Lei Andrew Fan]

On Fri, 17 Jun 2022 16:05:38 GMT, Ryan Ernst <duke at openjdk.org> wrote:

> Applied required casts in jdk.crypto.ec for the upcoming warning.
> Verified by cherry-picking @asotona's patch.

Marked as reviewed by xuelei (Reviewer).

src/jdk.crypto.ec/share/classes/sun/security/ec/XDHPublicKeyImpl.java line 79:

> 77:         int bitsMod8 = params.getBits() % 8;
> 78:         if (bitsMod8 != 0) {
> 79:             byte mask = (byte) ((1 << bitsMod8) - 1);

I may not insert a whitespace after the "(byte)" conversion.  Similar to following update.  Otherwise, looks good to me.

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PR: https://git.openjdk.org/jdk/pull/9203