Fixed compilation warning under GCC
Fixed compilation warning under GCC

git-svn-id: ab66a9de07fa9d47c5829c82992f5279466c775f@3342 63c20433-aa62-49bd-875c-5a186b69a8fb

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