Fix return code to make WMP work. b=191157 r=dbradley@netscape.com sr=blizzard@mozilla.org a=asa@mozilla.org

embedding/browser/activex/src/plugin/XPCDocument.cpp

@@ -1136,7 +1136,7 @@ END_COM_MAP()
         /* [out][retval] */ BSTR *p)
     {
         *p = mURL.Copy();
-        return E_FAIL;
+        return S_OK;
     }
     
     virtual /* [id][propput] */ HRESULT STDMETHODCALLTYPE put_domain(