hg: shenandoah/jdk9/hotspot: Initialize result field to NULL, to avoid compiler warning.

[roman at kennke.org]

Changeset: 45ef3d93b5f9
Author:    rkennke
Date:      2016-02-03 10:11 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/45ef3d93b5f9

Initialize result field to NULL, to avoid compiler warning.

! src/share/vm/opto/library_call.cpp