Fixed vobsub export on win32+msvc
Fixed vobsub export on win32+msvc

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