hg: jdk/sandbox: 8203843: BasicParState::default_estimated_thread_count(false) can return 0 in gtest

[chris.hegarty at oracle.com]

Changeset: 188a87cbfac3
Author:    kbarrett
Date:      2018-05-29 16:02 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/188a87cbfac3

8203843: BasicParState::default_estimated_thread_count(false) can return 0 in gtest
Summary: Ensure minimum estimated thread count is 1.
Reviewed-by: tschatzl, stuefe, rehn

! src/hotspot/share/gc/shared/oopStorage.cpp