hg: jdk8u/jdk8u-jfr-incubator/hotspot: 8229366: JFR backport allows unchecked writing to memory

[jaroslav.bachorik at datadoghq.com]

Changeset: 161ab90e3cae
Author:    mbalao
Date:      2019-08-26 16:37 -0300
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-jfr-incubator/hotspot/rev/161ab90e3cae

8229366: JFR backport allows unchecked writing to memory
Reviewed-by: jbachorik

! src/share/vm/jfr/instrumentation/jfrEventClassTransformer.cpp