Merge pull request #25 from fanatid/fix/code-style

fix code style

lib/b64.js

@@ -8,17 +8,12 @@ var revLookup = []
 var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
 
 function init () {
-  var i
   var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
-  var len = code.length
-
-  for (i = 0; i < len; i++) {
+  for (var i = 0, len = code.length; i < len; ++i) {
     lookup[i] = code[i]
-  }
-
-  for (i = 0; i < len; ++i) {
     revLookup[code.charCodeAt(i)] = i
   }
+
   revLookup['-'.charCodeAt(0)] = 62
   revLookup['_'.charCodeAt(0)] = 63
 }
@@ -50,8 +45,8 @@ function toByteArray (b64) {
 
   for (i = 0, j = 0; i < l; i += 4, j += 3) {
     tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
-    arr[L++] = (tmp & 0xFF0000) >> 16
-    arr[L++] = (tmp & 0xFF00) >> 8
+    arr[L++] = (tmp >> 16) & 0xFF
+    arr[L++] = (tmp >> 8) & 0xFF
     arr[L++] = tmp & 0xFF
   }