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));
       }