This function can return null, which will make the calls to
BIO_meth_set_* trigger a null deref.
Even after fixing this, there is an issue with the
`BIOPointer::New(GetMethod())` call in `NodeBIO::New` because the
`New` method cannot handle a null pointer despite other code already
guarding for this
(e.g. the `NodeBIO::New` function already checks `bio`).
This patch solves the issues by adding more null checks.
PR-URL: https://github.com/nodejs/node/pull/61788
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
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