Windows os_windows-gtest broken for UseLargePages

The comparisons in the test check for reservations != NULL and consider that a failed reservation, which is incorrect. This leads to the test never really doing anything. When UseLargePages is false, the test is skipped and when true and the user is configured with lock permissions, the test is skipped after the first allocation (since it is seen as a failure).

When a user doesn't have permissions to lock memory, the JVM will turn off large pages so this will be the same as running with -UseLargePages.