[11u] RFR (S) 8209055: c.s.t.javac.code.DeferredCompletionFailureHandler seems to use WeakHashMap incorrectly

[Langer, Christoph]

> Okay, thanks! Maybe I just backport the patch as is, and we apply the
> testbug backport right away.

Good idea, I've put you on copy in my mail to compiler-dev.

/Christoph