Make sure <url>s are being serialized according to spec

LayoutTests/resources/js-test.js

Index: LayoutTests/resources/js-test.js
diff --git a/LayoutTests/resources/js-test.js b/LayoutTests/resources/js-test.js
index ba1d8acddd5a9f64898389d1ea286d6425746baf..6c81b2a36b8175b14d0dc3cd1f47ad99f240f880 100644
--- a/LayoutTests/resources/js-test.js
+++ b/LayoutTests/resources/js-test.js
@@ -263,8 +263,9 @@ function shouldBe(_a, _b, quiet, opt_tolerance)
     if (!quiet) {
         testPassed(_a + " is " + _b);
     }
-  } else if (typeof(_av) == typeof(_bv))
+  } else if (typeof(_av) == typeof(_bv)){
     testFailed(_a + " should be " + _bv + ". Was " + stringify(_av) + ".");
+  }
   else
     testFailed(_a + " should be " + _bv + " (of type " + typeof _bv + "). Was " + _av + " (of type " + typeof _av + ").");
 }