mshtml: Make sure that readState is READYSTATE_LOADING in read_stream_data.

dlls/mshtml/navigate.c

@@ -972,8 +972,11 @@ static HRESULT read_stream_data(nsChannelBSC *This, IStream *stream)
 
             on_start_nsrequest(This);
 
-            if(This->window)
+            if(This->window) {
                 update_window_doc(This->window);
+                if(This->window->readystate != READYSTATE_LOADING)
+                    set_ready_state(This->window, READYSTATE_LOADING);
+            }
         }
 
         This->bsc.readed += This->nsstream->buf_size;

dlls/mshtml/tests/events.c

@@ -1310,7 +1310,6 @@ static void test_onreadystatechange(IHTMLDocument2 *doc)
     SET_EXPECT(iframe_onreadystatechange_interactive);
     SET_EXPECT(iframe_onreadystatechange_complete);
     pump_msgs(&called_iframe_onreadystatechange_complete);
-    todo_wine
     CHECK_CALLED(iframe_onreadystatechange_loading);
     CHECK_CALLED(iframe_onreadystatechange_interactive);
     CHECK_CALLED(iframe_onreadystatechange_complete);