Fix presubmit error.

test/mjsunit/regress/regress-swapelements.js

Index: test/mjsunit/regress/regress-swapelements.js
===================================================================
--- test/mjsunit/regress/regress-swapelements.js	(revision 6020)
+++ test/mjsunit/regress/regress-swapelements.js	(working copy)
@@ -29,7 +29,7 @@
 // http://code.google.com/p/chromium/issues/detail?id=66099.
 
 function Item(val) {
-    this.value = val;
+  this.value = val;
 }
 
 
@@ -38,17 +38,17 @@
 
 
 function myToString() {
-    array1.splice(0, 1);
-    return this.value.toString();
+  array1.splice(0, 1);
+  return this.value.toString();
 }
 
 
 function test() {
-    for (var i = 0; i < size; i++) {
-	array1[i] = new Item(i);
-	array1[i].toString = myToString;
-    }
-    array1.sort();
+  for (var i = 0; i < size; i++) {
+      array1[i] = new Item(i);
+      array1[i].toString = myToString;
+  }
+  array1.sort();
 }