mshtml: Improve locale stub for KeyboardEvent.

dlls/mshtml/htmlevent.c

@@ -2154,8 +2154,11 @@ static HRESULT WINAPI DOMKeyboardEvent_get_char(IDOMKeyboardEvent *iface, VARIAN
 static HRESULT WINAPI DOMKeyboardEvent_get_locale(IDOMKeyboardEvent *iface, BSTR *p)
 {
     DOMKeyboardEvent *This = impl_from_IDOMKeyboardEvent(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+
+    FIXME("(%p)->(%p) semi-stub\n", This, p);
+
+    *p = SysAllocString(L"");
+    return *p ? S_OK : E_OUTOFMEMORY;
 }
 
 static const IDOMKeyboardEventVtbl DOMKeyboardEventVtbl = {

dlls/mshtml/tests/events.js

@@ -760,6 +760,7 @@ sync_test("keyboard_event", function() {
     ok(e.location === 0, "location = " + e.location);
     ok(e.detail === 0, "detail = " + e.detail);
     ok(e.which === 0, "which = " + e.which);
+    ok(e.locale === "", "locale = " + e.locale);
 });
 
 sync_test("custom_event", function() {