message: Clipboard: [windows] Fixed not closing win32 clipboard on early return.
diff: @@ -9805,7 +9805,10 @@ static const char* GetClipboardTextFn_DefaultImpl(void*)
  return NULL;
  HANDLE wbuf_handle = GetClipboardData(CF_UNICODETEXT);
  if (wbuf_handle == NULL)
  + {
  + CloseClipboard();
  return NULL;
  + }
  if (ImWchar* wbuf_global = (ImWchar*)GlobalLock(wbuf_handle))
  {
  int buf_len = ImTextCountUtf8BytesFromStr(wbuf_global, NULL) + 1;
  