[PATCH 0/1] MR8840: ntdll/tests: Add check for len and avoid CommitSize with old Windows.

[Bernhard Übelacker (＠bernhardu)]

Followup to 212be298db.

[Test pattern page](https://test.winehq.org/data/patterns.html#ntdll:virtual)

[Testbot run with this patch](https://testbot.winehq.org/JobDetails.pl?Key=159540)