git: openjdk/jdk: 8178348: left_n_bits(0) invokes undefined behavior

[Harold Seigel]

Changeset: 4b5c664b
Author:    Harold Seigel <hseigel at openjdk.org>
Date:      2021-03-12 19:00:36 +0000
URL:       https://git.openjdk.java.net/jdk/commit/4b5c664b

8178348: left_n_bits(0) invokes undefined behavior

Reviewed-by: dholmes, coleenp

! src/hotspot/share/utilities/globalDefinitions.cpp
! src/hotspot/share/utilities/globalDefinitions.hpp