[PATCH 1/4] winealsa: CreateEvent and CreateThread return NULL on error, not INVALID_HANDLE_VALUE.

[Joerg-Cyril.Hoehle at t-systems.com]

Hi,

Today I realised that this might perhaps cure the 1-2 bugs in bugzilla with
ALSA_RingMessage NULL pointer crashes in their backtrace?

Isn't this NULL/INVALID_HANDLE_VALUE mismatch a kind of fault that
Smatch/Coccinelle should have found before me?

Note that CreateEvent's success is still not always checked. I read somewhere that
there's only a smaller number of events per thread in MS-Windows. Is is a problem?
Should I add looking for unchecked CreateEvent to my TODO list?

Regards,
 Jörg Höhle
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