engine: client: move timescale pitch apply to channel mixing

engine/client/s_main.c

@@ -533,8 +533,6 @@ void S_StartSound( const vec3_t pos, int ent, int chan, sound_t handle, float fv
 	// spatialize
 	memset( target_chan, 0, sizeof( *target_chan ));
 
-	pitch *= (sys_timescale.value + 1) / 2;
-
 	VectorCopy( pos, target_chan->origin );
 	target_chan->staticsound = ( ent == 0 ) ? true : false;
 	target_chan->use_loop = (flags & SND_STOP_LOOPING) ? false : true;

engine/client/s_mix.c

@@ -619,6 +619,8 @@ void MIX_MixChannelsToPaintbuffer( int endtime, int rate, int outputRate )
 			ch->pitch = VOX_ModifyPitch( ch, ch->basePitch * 0.01f );
 		else ch->pitch = ch->basePitch * 0.01f;
 
+		ch->pitch *= ( sys_timescale.value + 1 ) / 2;
+
 		if( CL_GetEntityByIndex( ch->entnum ) && ( ch->entchannel == CHAN_VOICE ))
 		{
 			if( pSource->width == 1 )