hg: jdk/submit: 8224193: stringStream should not use Resouce Area

[thomas.stuefe at gmail.com]

Changeset: 22961d673487
Author:    stuefe
Date:      2019-05-22 09:33 +0200
URL:       http://hg.openjdk.java.net/jdk/submit/rev/22961d673487

8224193: stringStream should not use Resouce Area
Reviewed-by: goetz, coleenp, dholmes

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