Close the descriptor used for a path regardless
        of mode.

def _close(self, fd):
        """
        Close the descriptor used for a path regardless
        of mode.
    """
        if self._mode == WF_INOTIFYX:
            try: pynotifyx.rm_watch(self._inx_fd, fd)
            except: pass
        else:
            try: os.close(fd)
            except: pass