hg: jdk/jdk: 8225225: stringStream internal buffer should always be zero terminated

[thomas.stuefe at gmail.com]

Changeset: c87e52dbdca0
Author:    stuefe
Date:      2019-06-05 19:34 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/c87e52dbdca0

8225225: stringStream internal buffer should always be zero terminated
Reviewed-by: coleenp, dholmes

! src/hotspot/share/utilities/ostream.cpp
! src/hotspot/share/utilities/ostream.hpp
! test/hotspot/gtest/utilities/test_ostream.cpp