Fixed gcc compilation warnings
Fixed gcc compilation warnings

git-svn-id: ab66a9de07fa9d47c5829c82992f5279466c775f@3853 63c20433-aa62-49bd-875c-5a186b69a8fb

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