fix OS X regression due to QNX header differences
fix OS X regression due to QNX header differences

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