[1/3] oleaut32/tests: Add another test for calling a varargs method.

[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=16565

Your paranoid android.


=== w2000pro (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== wxppro (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== w2003std (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== wvistau64 (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== w2008s64 (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== w7u (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== w8 (32 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== wvistau64 (64 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008

=== w2008s64 (64 bit tmarshal) ===
tmarshal.c:1606: Test failed: IDispatch_Invoke failed with error 0x80020008