RFR: JDK-8243154 Fix deprecation warnings in failure handler

[Magnus Ihse Bursie]

The failure handler has two places where deprecated methods are used. 
This results in warnings that are not possible to suppress. This patch 
fixes the code in those places.

This patch is part of the ongoing effort to make the entire build free 
of warnings.

Bug: https://bugs.openjdk.java.net/browse/JDK-8243154
WebRev: 
http://cr.openjdk.java.net/~ihse/JDK-8243154-fix-failurehandler-deprecations/webrev.01

/Magnus