RFR: 8263560: Remove needless wrapping with BufferedInputStream [v5]

[Сергей Цыпанов]

On Mon, 15 Mar 2021 11:41:07 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Done
>
>> Done
> 
> I think I'd prefer if the exception message would say that the JMOD is invalid or that the JMOD file is truncated (because I don't think anyone seeing this exception will know anything about the header).

Fixed

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PR: https://git.openjdk.java.net/jdk/pull/2992