hg: jdk9/sandbox/hotspot: JDK-8054307-branch: invoke_string_value_callback should not allocate a new array if string length is 0.

[tobias.hartmann at oracle.com]

Changeset: 8bfd7a2bcddc
Author:    thartmann
Date:      2015-10-12 12:27 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/hotspot/rev/8bfd7a2bcddc

JDK-8054307-branch: invoke_string_value_callback should not allocate a new array if string length is 0.

! src/share/vm/classfile/javaClasses.hpp
! src/share/vm/prims/jvmtiTagMap.cpp