Ensure _.pullAll works with the same value for array and values. [closes #2356]

lodash.js

@@ -3394,6 +3394,9 @@
           length = values.length,
           seen = array;
 
+      if (array === values) {
+        values = copyArray(values);
+      }
       if (iteratee) {
         seen = arrayMap(array, baseUnary(iteratee));
       }

test/test.js

@@ -18081,6 +18081,21 @@
 
   /*--------------------------------------------------------------------------*/
 
+  QUnit.module('lodash.pullAll');
+
+  (function() {
+    QUnit.test('should work with the same value for `array` and `values`', function(assert) {
+      assert.expect(1);
+
+      var array = [{ 'a': 1 }, { 'b': 2 }],
+          actual = _.pullAll(array, array);
+
+      assert.deepEqual(actual, []);
+    });
+  }());
+
+  /*--------------------------------------------------------------------------*/
+
   QUnit.module('lodash.pullAllBy');
 
   (function() {