RFR: 8294356: IGV: scheduled graphs contain duplicated elements [v2]

[Roberto Castañeda Lozano]

On Mon, 26 Sep 2022 15:03:01 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

> Looks good!

Thanks for reviewing, Christian. I applied your suggestions, and replaced `NULL` with `nullptr` everywhere in the touched function for consistency.

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PR: https://git.openjdk.org/jdk/pull/10423