RFR: 8263358: Update java.lang to use instanceof pattern variable [v5]

[Patrick Concannon]

On Mon, 15 Mar 2021 13:49:56 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

>> yes,
>> javac should emit a warning in that case, that also the answer of Brian.
>> 
>> https://mail.openjdk.java.net/pipermail/amber-spec-experts/2021-March/002925.html
>
> Then we should use an unbounded wildcard here and in similar places to avoid "rawtype" warnings in the future.

I've added the wildcard to the pattern variable check now. See b89027c

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PR: https://git.openjdk.java.net/jdk/pull/2913