subtitle_smi: encode it as iso-8859-1
subtitle_smi: encode it as iso-8859-1

this fixes #282

qnorsten/svtplay-dl,olof/svtplay-dl,spaam/svtplay-dl,selepo/svtplay-dl,iwconfig/svtplay-dl,qnorsten/svtplay-dl,spaam/svtplay-dl,iwconfig/svtplay-dl,olof/svtplay-dl,dalgr/svtplay-dl,selepo/svtplay-dl,dalgr/svtplay-dl