webkitCredentialGetCredential() is private function so we shouldn't use g_return macros, but asserts.
Created attachment 209621 [details] Patch
Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See http://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API
Committed r154589: <http://trac.webkit.org/changeset/154589>