RFR: 8284638: store skip buffers in InputStream Object [v7]

[XenoAmess]

On Tue, 19 Apr 2022 22:47:42 GMT, liach <duke at openjdk.java.net> wrote:

>> XenoAmess has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   change to liach operation.
>
> src/java.base/share/classes/java/io/InputStream.java line 62:
> 
>> 60: 
>> 61:     /** Skip buffer, null until allocated */
>> 62:     private byte[] skipBuffer = null;
> 
> This can be removed too as you have the soft reference already.

@liach done.

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PR: https://git.openjdk.java.net/jdk/pull/5872