During boot of Other M, there is momentarily a period when VICallback's
cycles late is larger than GetTicksPerHalfLine(). Because
GetTicksPerHalfLine() returns a u32 and c++'s weird type promotion rules,
cycleslate gets promoted from a s32 to a u32 and the result of the
substraction is a really large u32.
Before ScheduleEvent accuracy improvements, ScheduleEvent took a s32, so
the result got cast back to the small negitave we expect. But it now takes
a s64 and the u32 to s64 conversion gives us a really large number (around
two seconds) and Other M times out while waiting for something.
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