[scudo] Calling initCache() in init() of SizeClassAllocatorLocalCache (#71427)

initCacheMaybe() will init all the size class arrays at once and it
doesn't have much work to do even if it supports partial initialization.
This avoids the call to initCacheMaybe in each allocate()/deallocate().

GitOrigin-RevId: 048ece44133e743f62fb2d96a74e4158d3c86ee6
1 file changed