Fix signature of callback function for load avg (#1781)
Fix signature of callback function for load avg (#1781)

It looks like `WAITORTIMERCALLBACK` should have two arguments, the void* as well as a boolean representing whether the wait time expired: https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/ms687066(v=vs.85)
We were previously missing the boolean which might lead to a crash on 32-bit systems, but even if not this should be corrected.
0-wiz-0/psutil,giampaolo/psutil,0-wiz-0/psutil,giampaolo/psutil