fix jump calculation for various instructions
fix jump calculation for various instructions

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