[1/2] gdiplus/tests: Add tests for 0-pixel pens.

[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=21326

Your paranoid android.


=== wxppro (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w2003std (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== wvistau64 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w2008s64 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w7u (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w7pro64 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w8 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w864 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w1064 (32 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== wvistau64 (64 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w2008s64 (64 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w7pro64 (64 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w864 (64 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0

=== w1064 (64 bit graphics) ===
graphics.c:3903: Test failed: 1: expected 1, got 0
graphics.c:3928: Test failed: 1: expected 1, got 0