Fix presubmit error (a tab in v8natives.js)

Review URL: http://codereview.chromium.org/2132025

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/v8natives.js

@@ -557,7 +557,7 @@ function DefineOwnProperty(obj, p, desc, should_throw) {
           SameValue(desc.getSet(), current.getSet()))) {
        return true;
      }
-			
+
     // Step 7
     if (desc.isConfigurable() ||  desc.isEnumerable() != current.isEnumerable())
       throw MakeTypeError("redefine_disallowed", ["defineProperty"]);