RFR: 8377910: Minor cleanup of java/io/FileDescriptor/Sharing.java [v3]

[Alan Bateman]

On Fri, 13 Feb 2026 19:22:01 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Null checks potentially mask a more serious, fundamental problem and should be removed to allow a `NullPointerException` to be throw if the variable is `null`.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8377910: Fix indentation and make java.io imports explicit

Marked as reviewed by alanb (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29718#pullrequestreview-3801172808