Bump to v3.8.1.

lodash.zipwith/README.md

@@ -1,4 +1,4 @@
-# lodash.zipwith v3.8.0
+# lodash.zipwith v3.8.1
 
 The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash’s](https://lodash.com/) `_.zipWith` exported as a [Node.js](http://nodejs.org/)/[io.js](https://iojs.org/) module.
 
@@ -17,4 +17,4 @@ In Node.js/io.js:
 var zipWith = require('lodash.zipwith');
 ```
 
-See the [documentation](https://lodash.com/docs#zipWith) or [package source](https://github.com/lodash/lodash/blob/3.8.0-npm-packages/lodash.zipwith) for more details.
+See the [documentation](https://lodash.com/docs#zipWith) or [package source](https://github.com/lodash/lodash/blob/3.8.1-npm-packages/lodash.zipwith) for more details.

lodash.zipwith/index.js

@@ -1,5 +1,5 @@
 /**
- * lodash 3.8.0 (Custom Build) <https://lodash.com/>
+ * lodash 3.8.1 (Custom Build) <https://lodash.com/>
  * Build: `lodash modern modularize exports="npm" -o ./`
  * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
@@ -28,8 +28,8 @@ var restParam = require('lodash.restparam'),
  */
 var zipWith = restParam(function(arrays) {
   var length = arrays.length,
-      iteratee = arrays[length - 2],
-      thisArg = arrays[length - 1];
+      iteratee = length > 2 ? arrays[length - 2] : undefined,
+      thisArg = length > 1 ? arrays[length - 1] : undefined;
 
   if (length > 2 && typeof iteratee == 'function') {
     length -= 2;

lodash.zipwith/package.json

@@ -1,6 +1,6 @@
 {
   "name": "lodash.zipwith",
-  "version": "3.8.0",
+  "version": "3.8.1",
   "description": "The modern build of lodash’s `_.zipWith` as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",