[1/6] gdi32/tests: Refactor test_fake_bold_font() to avoid code duplications.

[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=19282

Your paranoid android.


=== wvistau64 (32 bit font) ===
Failure running script in VM: network read timed out (Connect:AgentVersion.h:0/9)

=== wvistau64 (64 bit font) ===
Failure running script in VM: network read timed out (Connect:AgentVersion.h:0/9)