RFR: 8365197: javax.imageio.stream MemoryCache based streams no longer need a disposer.

[Sergey Bylokhov]

On Mon, 25 Aug 2025 20:18:49 GMT, Phil Race <prr at openjdk.org> wrote:

> The disposer for MemoryCacheImageInputStream isn't needed. All it does is clear an ArrayList of byte[]
> GC can take care of that.

Marked as reviewed by serb (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/26933#pullrequestreview-3156709004