[PATCH] dlls/winmm/tests: enable compilation with long types

[Marvin]

Hi,

While running your changed tests, 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=110118

Your paranoid android.


=== w8 (32 bit report) ===

winmm:
midi.c:879: Test failed: expected 50ms or greater, got 153ms