fakeUint8Array called forEachIndex with wrong parameters.

Fixes #266

Author: kkapsner

lib/modifiedAudioAPI.js

@@ -131,7 +131,7 @@
 			if (!cached){
 				var rate = getAudioFakeRate(array, prefs);
 				var rng = randomSupply.getValueRng(rate, window);
-				forEachIndex(prefs, function(index, i){
+				forEachIndex(array, prefs, function(index, i){
 					array[index] = rng(array[index], i);
 				});
 				if (prefs("useAudioCache")){