fix GC safety issue in MyClasspath::updatePackageMap
fix GC safety issue in MyClasspath::updatePackageMap

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