CID 313104: Error handling issues in lib/ns/query.c

@dfronza This seem to come from 8cc5abff and it slipped to %November 2020 (9.11.25, 9.11.25-S1, 9.16.9, 9.16.9-S1, 9.17.7) release, please address it in %December 2020 (9.11.26, 9.11.26-S1, 9.16.10, 9.16.10-S1, 9.17.8):

*** CID 313104:  Error handling issues  (CHECKED_RETURN)
/lib/ns/query.c: 5582 in query_lookup()
5576     	{
5577     		dboptions |= DNS_DBFIND_COVERINGNSEC;
5578     	}
5579     
5580     	dns_db_getservestalerefresh(qctx->client->view->cachedb,
5581     				    &stale_refresh);
>>>     CID 313104:  Error handling issues  (CHECKED_RETURN)
>>>     Calling "dns_db_getservestalettl" without checking return value (as is done elsewhere 4 out of 5 times).
5582     	dns_db_getservestalettl(qctx->client->view->cachedb, &stale_ttl);
5583     	if (stale_refresh > 0) {
5584     		if (qctx->client->view->staleanswersok == dns_stale_answer_yes)
5585     		{
5586     			dboptions |= DNS_DBFIND_STALEENABLED;
5587     		} else if (qctx->client->view->staleanswersok ==

Also see https://scan8.coverity.com/reports.htm#v38342/p12582/fileInstanceId=37304802&defectInstanceId=11267987&mergedDefectId=313104.