mshtml: Return proper errors when navigating with no browser.

dlls/mshtml/htmlwindow.c

@@ -2832,7 +2832,7 @@ static HRESULT WINAPI HTMLPrivateWindow_SuperNavigate(IHTMLPrivateWindow *iface,
         FIXME("unimplemented flags %lx\n", flags & ~2);
 
     if(!window || !window->browser)
-        return E_UNEXPECTED;
+        return E_FAIL;
 
     if(window->browser->doc->hostui) {
         hres = IDocHostUIHandler_TranslateUrl(window->browser->doc->hostui, 0, url, &translated_url);

dlls/mshtml/navigate.c

@@ -2679,6 +2679,9 @@ HRESULT navigate_url(HTMLOuterWindow *window, const WCHAR *new_url, IUri *base_u
     BSTR display_uri;
     HRESULT hres;
 
+    if(!window->browser)
+        return E_UNEXPECTED;
+
     if(new_url && base_uri)
         hres = CoInternetCombineUrlEx(base_uri, new_url, URL_ESCAPE_SPACES_ONLY|URL_DONT_ESCAPE_EXTRA_INFO,
                 &nav_uri, 0);

dlls/mshtml/tests/events.c

@@ -6003,12 +6003,13 @@ static void test_document_close(void)
 {
     IHTMLPrivateWindow *priv_window;
     IHTMLDocument2 *doc, *doc_node;
+    IHTMLLocation *location;
     IHTMLDocument3 *doc3;
     IHTMLElement *elem;
     DWORD cookie;
+    BSTR bstr, bstr2;
     HRESULT hres;
     VARIANT v;
-    BSTR bstr;
     LONG ref;
     MSG msg;
 
@@ -6091,6 +6092,24 @@ static void test_document_close(void)
 
     IHTMLDocument2_Release(doc_node);
     IHTMLDocument2_Release(doc);
+
+    bstr = SysAllocString(L"about:blank");
+    hres = IHTMLWindow2_get_location(window, &location);
+    ok(hres == S_OK, "get_location failed: %08lx\n", hres);
+    hres = IHTMLLocation_put_href(location, bstr);
+    ok(hres == E_UNEXPECTED || broken(hres == E_ABORT), "put_href returned: %08lx\n", hres);
+    IHTMLLocation_Release(location);
+
+    V_VT(&v) = VT_EMPTY;
+    bstr2 = SysAllocString(L"");
+    hres = IHTMLWindow2_QueryInterface(window, &IID_IHTMLPrivateWindow, (void**)&priv_window);
+    ok(hres == S_OK, "Could not get IHTMLPrivateWindow) interface: %08lx\n", hres);
+    hres = IHTMLPrivateWindow_SuperNavigate(priv_window, bstr, bstr2, NULL, NULL, &v, &v, 0);
+    ok(hres == E_FAIL, "SuperNavigate returned: %08lx\n", hres);
+    IHTMLPrivateWindow_Release(priv_window);
+    SysFreeString(bstr2);
+    SysFreeString(bstr);
+
     IHTMLWindow2_Release(window);
     window = NULL;