Fix crash in setVolume()
Fix crash in setVolume()

CRDNicolasBourbaki/sfeMovie,CRDNicolasBourbaki/sfeMovie,Yalir/sfeMovie,CRDNicolasBourbaki/sfeMovie,Yalir/sfeMovie,Yalir/sfeMovie,firefly2442/sfeMovie,firefly2442/sfeMovie,firefly2442/sfeMovie,CRDNicolasBourbaki/sfeMovie,CRDNicolasBourbaki/sfeMovie,CRDNicolasBourbaki/sfeMovie,firefly2442/sfeMovie,Yalir/sfeMovie,firefly2442/sfeMovie,Yalir/sfeMovie,firefly2442/sfeMovie,Yalir/sfeMovie