While nullptr also mostly seems to work, GetCurrentProcess() is the
correct way of specifying the current process for operations like
MapViewOfFile3 or VirtualAlloc2.

Bug: chromium:1218005
Change-Id: I988140374a708018dca089c29eb699e0536a5285
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3620288Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80324}