PR_ASSERT(first_msg <= last_msg);
NS_ASSERTION(first_msg <= last_msg, "first > last");
nsNNTPNewsgroupList::InitXOVER(PRInt32 first_msg, PRInt32 last_msg){    	int		status = 0;	// Tell the FE to show the GetNewMessages progress dialog#ifdef HAVE_PANES	FE_PaneChanged (m_pane, PR_FALSE, MSG_PanePastPasswordCheck, 0);#endif	/* Consistency checks, not that I know what to do if it fails (it will	 probably handle it OK...) */	PR_ASSERT(first_msg <= last_msg);	/* If any XOVER lines from the last time failed to come in, mark those	   messages as read. */	if (m_lastProcessedNumber < m_lastMsgNumber) 	{		m_set->AddRange(m_lastProcessedNumber + 1, m_lastMsgNumber);	}	m_firstMsgNumber = first_msg;	m_lastMsgNumber = last_msg;	m_lastProcessedNumber = first_msg > 1 ? first_msg - 1 : 1;	return status;}