RFR[11u]: backport 8218966: AArch64: String.compareTo() can read memory after string

[Langer, Christoph]

> > I also updated JIRA (including link to this review thread, as required).
> Thank you Dmitrij. You will have to wait for one of the other Andrews or
> Christoph to provide an ack for the push.

Done. If you push it within the next 24hrs it'll still reach 11.0.5.

Best regards
Christoph