Simplify the root assignment.

lodash.src.js

@@ -259,30 +259,29 @@
     '\u2029': 'u2029'
   };
 
-  /**
-   * Used as a reference to the global object.
-   *
-   * The `this` value is used if it is the global object to avoid Greasemonkey's
-   * restricted `window` object, otherwise the `window` object is used.
-   */
-  var root = (objectTypes[typeof window] && window !== (this && this.window)) ? window : this;
-
   /** Detect free variable `exports`. */
   var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
 
   /** Detect free variable `module`. */
   var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;
 
-  /** Detect free variable `global` from Node.js or Browserified code and use it as `root`. */
+  /** Detect free variable `global` from Node.js. */
   var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
-  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal ||
-      (typeof freeGlobal.WorkerGlobalScope == 'function' && freeGlobal instanceof freeGlobal.WorkerGlobalScope))) {
-    root = freeGlobal;
-  }
+
+  /** Detect free variable `window`. */
+  var freeWindow = objectTypes[typeof window] && window;
 
   /** Detect the popular CommonJS extension `module.exports`. */
   var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;
 
+  /**
+   * Used as a reference to the global object.
+   *
+   * The `this` value is used if it is the global object to avoid Greasemonkey's
+   * restricted `window` object, otherwise the `window` object is used.
+   */
+  var root = freeGlobal || ((freeWindow !== (this && this.window)) && freeWindow) || this;
+
   /*--------------------------------------------------------------------------*/
 
   /**