fix Math.natRandom for Windows build
fix Math.natRandom for Windows build

lwahlmeier/avian,bigfatbrowncat/avian-pack.avian,lostdj/avian,badlogic/avian,lostdj/avian,lwahlmeier/avian,marcinolawski/avian,minor-jason/avian,getlantern/avian,ucdseniordesign/avian,ucdseniordesign/avian,lwahlmeier/avian,ucdseniordesign/avian,lostdj/avian,badlogic/avian,badlogic/avian,dicej/avian,bigfatbrowncat/avian-pack.avian,dicej/avian,getlantern/avian,joshuawarner32/avian,MaartenR/avian,MaartenR/avian,MaartenR/avian,lwahlmeier/avian,getlantern/avian,bgould/avian,minor-jason/avian,bgould/avian,badlogic/avian,joshuawarner32/avian,joshuawarner32/avian,minor-jason/avian,marcinolawski/avian,bgould/avian,ucdseniordesign/avian,dicej/avian,minor-jason/avian,lostdj/avian,MaartenR/avian,joshuawarner32/avian,dicej/avian,bgould/avian,getlantern/avian,marcinolawski/avian,bigfatbrowncat/avian-pack.avian,bigfatbrowncat/avian-pack.avian,marcinolawski/avian