Patch for CVE-2015-5477 available?

[Dennis Kramer (DT)]

Hi folks!

Does anyone know if there's a patch available for CVE-2015-5477 
(https://kb.isc.org/article/AA-01272) for OpenBSD 5.6 (BIND 9.4.2-P2) ?

Thanks in advance.

Grt,