Call `vm_deallocate` on OSX for CPU statistics
Call `vm_deallocate` on OSX for CPU statistics

Apparently StackOverflow doesn't have all the answers. The examples
there I lifted this from didn't account to call `vm_deallocate` because
it looks like we're handed allocated memory! Indeed running the previous
state capture in a loop it infinitely allocated memory, but now it holds
steady when called in a loop.

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