HDS: adding file extenion.
HDS: adding file extenion.

Adding a file extension when the output file does not have one.

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