fixed gcc warning
fixed gcc warning

git-svn-id: ab66a9de07fa9d47c5829c82992f5279466c775f@3766 63c20433-aa62-49bd-875c-5a186b69a8fb

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