hg: jdk/jdk: 8232060: add some initializations using sigemptyset in os_aix.cpp

[matthias.baesken at sap.com]

Changeset: 7d6ba925590f
Author:    mbaesken
Date:      2019-10-10 08:46 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/7d6ba925590f

8232060: add some initializations using sigemptyset in os_aix.cpp
Reviewed-by: clanger, stuefe

! src/hotspot/os/aix/os_aix.cpp