* Swap do-while to while
If we use a do-while loop, we waste time if `aligned_size = 0`. This is also still accurate to FreeBSD behavior, where it returns success if `start == end` during mprotect.
This also effectively prevents the memory assert seen in updated versions of RESIDENT EVIL 2 (CUSA09193)
* Move prot validation outside loop
The prot variable shouldn't change during a mprotect call, so we can check the flags before protecting instead.
Also cleans up the code for prot validation.
This should improve performance, and is more accurate to FreeBSD code.
* Add logging for protect calls
This will help in debugging future problems
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