Fixed background bind on pre_destroy
Fixed background bind on pre_destroy

nguyen-viet-thanh-trung/gpac,Bevara/Access-open,rbouqueau/gpac,porcelijn/gpac,rbouqueau/gpac_brew_travis,nguyen-viet-thanh-trung/gpac,gpac/gpac,rbouqueau/gpac,rbouqueau/gpac,ARSekkat/gpac,gpac/gpac,ARSekkat/gpac,vladimir-kazakov/gpac,ARSekkat/gpac,nguyen-viet-thanh-trung/gpac,porcelijn/gpac,rbouqueau/gpac_brew_travis,rbouqueau/gpac,aymanelyaagoubi/gpac,rbouqueau/gpac,rauf/gpac,rbouqueau/gpac,emmanouil/gpac,RodolpheFouquet/gpac,emmanouil/gpac,rauf/gpac,porcelijn/gpac,rauf/gpac,aymanelyaagoubi/gpac,aymanelyaagoubi/gpac,vladimir-kazakov/gpac,Bevara/Access-open,gpac/gpac,nguyen-viet-thanh-trung/gpac,Bevara/Access-open,rbouqueau/gpac_brew_travis,aymanelyaagoubi/gpac,rauf/gpac,emmanouil/gpac,aymanelyaagoubi/gpac,gpac/gpac,gpac/gpac,rauf/gpac,ARSekkat/gpac,vladimir-kazakov/gpac,Bevara/Access-open,RodolpheFouquet/gpac,RodolpheFouquet/gpac,vladimir-kazakov/gpac,RodolpheFouquet/gpac,RodolpheFouquet/gpac,RodolpheFouquet/gpac,Bevara/Access-open,ARSekkat/gpac,emmanouil/gpac,rauf/gpac,porcelijn/gpac,rbouqueau/gpac_brew_travis,vladimir-kazakov/gpac,porcelijn/gpac,vladimir-kazakov/gpac,emmanouil/gpac,rbouqueau/gpac,gpac/gpac,rbouqueau/gpac_brew_travis,gpac/gpac,emmanouil/gpac,porcelijn/gpac,nguyen-viet-thanh-trung/gpac,Bevara/Access-open,nguyen-viet-thanh-trung/gpac,aymanelyaagoubi/gpac,ARSekkat/gpac,rbouqueau/gpac,rbouqueau/gpac_brew_travis,gpac/gpac