Fixed not using smaller MTU value when max head unit version is larger than known versions
Fixed not using smaller MTU value when max head unit version is larger than known versions

FordDev/sdl_ios,kshala-ford/sdl_ios,davidswi/sdl_ios,FordDev/sdl_ios,davidswi/sdl_ios,duydb2/sdl_ios,davidswi/sdl_ios,adein/sdl_ios,smartdevicelink/sdl_ios,adein/sdl_ios,APCVSRepo/sdl_ios,FordDev/sdl_ios,duydb2/sdl_ios,FordDev/sdl_ios,davidswi/sdl_ios,kshala-ford/sdl_ios,smartdevicelink/sdl_ios,davidswi/sdl_ios,kshala-ford/sdl_ios,FordDev/sdl_ios,APCVSRepo/sdl_ios,APCVSRepo/sdl_ios,kshala-ford/sdl_ios,APCVSRepo/sdl_ios,smartdevicelink/sdl_ios,smartdevicelink/sdl_ios,kshala-ford/sdl_ios,duydb2/sdl_ios,smartdevicelink/sdl_ios,APCVSRepo/sdl_ios