git: openjdk/jdk: 8270083: -Wnonnull errors happen with GCC 11.1.1

[Yasumasa Suenaga]

Changeset: 68b6e11e
Author:    Yasumasa Suenaga <ysuenaga at openjdk.org>
Date:      2021-07-10 05:01:23 +0000
URL:       https://git.openjdk.java.net/jdk/commit/68b6e11e481349e40014aa4593a53ae2ea74aedc

8270083: -Wnonnull errors happen with GCC 11.1.1

Reviewed-by: erikj, dlong, kbarrett

! make/hotspot/lib/JvmOverrideFiles.gmk
! src/hotspot/cpu/x86/assembler_x86.cpp
! src/hotspot/cpu/x86/c1_Runtime1_x86.cpp
! src/hotspot/cpu/x86/frame_x86.inline.hpp
! src/hotspot/cpu/x86/gc/z/zBarrierSetAssembler_x86.cpp
! src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp
! src/hotspot/cpu/x86/universalUpcallHandler_x86_64.cpp
! src/hotspot/share/utilities/compilerWarnings.hpp
! src/hotspot/share/utilities/compilerWarnings_gcc.hpp