git: openjdk/jdk-sandbox: riscv-port-branch: fix trailing whitespace issue

[duke]

Changeset: d351e320
Author:    jiangfeilong <jianfeilong at huawei.com>
Date:      2021-11-03 10:45:29 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/d351e320c5ef98215eea981fe8b2b83efb156e81

fix trailing whitespace issue

! src/hotspot/cpu/riscv/c2_MacroAssembler_riscv.hpp
! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/risv64/RISCV64ThreadContext.java