[8u] request for approval: JDK-8170536 Uninitialized memory in set_uintx_flag of attachListener.cpp

[Dmitry Samersoff]

Everybody,

Please approve 8u-only changes.

Webrev: http://cr.openjdk.java.net/~dsamersoff/JDK-8170536/webrev.01

Review thread:

http://mail.openjdk.java.net/pipermail/serviceability-dev/2016-December/020772.html

Thanks,
-Dmitry.