Fixed warnings with sample desc and audio
Fixed warnings with sample desc and audio

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