replace assert by error on wrong hls manifest
replace assert by error on wrong hls manifest

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