Don't crash when we 404.

sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java

Index: sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java
diff --git a/sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java b/sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java
index dffe88060c9e413663e22eaa4d25f21d0887d89c..defbb49b1c9cab488b4b2b89534bbedeeb9a42ad 100644
--- a/sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java
+++ b/sky/services/oknet/src/org/domokit/oknet/UrlLoaderImpl.java
@@ -133,6 +133,7 @@ public class UrlLoaderImpl implements UrlLoader {
                 // TODO(abarth): Which mError.code should we set?
                 mError.description = e.toString();
                 UrlResponse urlResponse = new UrlResponse();
+                urlResponse.url = request.urlString();
                 urlResponse.error = mError;
                 responseCallback.call(urlResponse);