[PATCH 3/3] ntdll/tests: Restore old value in a more context independent way.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=18722

Your paranoid android.


=== wvistau64 (32 bit exception) ===
exception.c:485: Test failed: 42: Wrong exception address 002D0000/002D0001
exception: unhandled exception 80000004 at 002D0000
exception.c:485: Test failed: 42: Wrong exception address 77BAED97/002D0001

=== w7u (32 bit exception) ===
exception.c:485: Test failed: 42: Wrong exception address 002F0000/002F0001
exception: unhandled exception 80000004 at 002F0000
exception.c:485: Test failed: 42: Wrong exception address 77CDE34F/002F0001

=== w1064 (32 bit exception) ===
Failure running script in VM: network read timed out (Connect:AgentVersion.h:0/9)