git: openjdk/jdk: 8257502: Builds fail with new warnings after JDK-8256254

[Aleksey Shipilev]

Changeset: eaf4db6b
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2020-12-01 13:51:35 +0000
URL:       https://git.openjdk.java.net/jdk/commit/eaf4db6b

8257502: Builds fail with new warnings after JDK-8256254

Reviewed-by: jiefu, stuefe

! src/hotspot/cpu/s390/sharedRuntime_s390.cpp
! src/hotspot/cpu/x86/sharedRuntime_x86_32.cpp