RFR(xxs): 8212896: AIX build breaks after 8212611

Hi all, may I please have a review (trivial rule) for this tiny build fix: https://bugs.openjdk.java.net/browse/JDK-8212896 http://cr.openjdk.java.net/~stuefe/webrevs/8212896-aix-build-broken-after-82... Thank you, Thomas