hg: jdk/hs: 8197827: [windows] Small cleanups after JDK-8185712

[david.holmes at oracle.com]

Changeset: 0f81d08a578e
Author:    stuefe
Date:      2018-02-13 14:38 +0100
URL:       http://hg.openjdk.java.net/jdk/hs/rev/0f81d08a578e

8197827: [windows] Small cleanups after JDK-8185712
Reviewed-by: zgu, dholmes

! src/hotspot/os/windows/os_windows.cpp
! src/hotspot/os/windows/symbolengine.cpp
! src/hotspot/os/windows/windbghelp.hpp