reduce the amount of compiler warnings for variable shadowing

code/client/snd_mix.c

@@ -164,7 +164,6 @@ void S_TransferPaintBuffer(int endtime)
 
 	if ( s_testsound->integer ) {
 		int		i;
-		int		count;
 
 		// write a fixed sine wave
 		count = (endtime - s_paintedtime);