ntdll/tests: Get rid of "defined but not used" warnings on non-x86(_64) platforms

[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=10227

Your paranoid android.


=== w2000pro (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 00950000/00950001
exception: unhandled exception 80000004 at 00950000
exception.c:484: Test failed: 42: Wrong exception address 7C5C20B0/00950001

=== wxppro (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 00A30000/00A30001
exception: unhandled exception 80000004 at 00A30000
exception.c:484: Test failed: 42: Wrong exception address 7C80DF3C/00A30001

=== wvistau64 (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 00340000/00340001
exception: unhandled exception 80000004 at 00340000
exception.c:484: Test failed: 42: Wrong exception address 7751ED97/00340001

=== w2008s64 (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 002C0000/002C0001
exception: unhandled exception 80000004 at 002C0000
exception.c:484: Test failed: 42: Wrong exception address 77E5ED97/002C0001

=== w7u (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 003D0000/003D0001
exception: unhandled exception 80000004 at 003D0000
exception.c:484: Test failed: 42: Wrong exception address 77CDE34F/003D0001

=== w8 (32 bit exception) ===
exception.c:484: Test failed: 42: Wrong exception address 003E0000/003E0001
exception: unhandled exception 80000004 at 003E0000
exception.c:484: Test failed: 42: Wrong exception address 77174D17/003E0001