CID 361427: Error handling issues in lib/dns/rdata.c

Coverity Scan identified the following in 3881afeb:

*** CID 361427:  Error handling issues  (CHECKED_RETURN)
/lib/dns/rdata.c: 2433 in dns_rdata_checksvcb()
2427     	dns_rdata_in_svcb_t svcb;
2428     
2429     	REQUIRE(owner != NULL);
2430     	REQUIRE(rdata != NULL);
2431     	REQUIRE(DNS_RDATA_VALIDFLAGS(rdata));
2432     
>>>     CID 361427:  Error handling issues  (CHECKED_RETURN)
>>>     Calling "dns_rdata_tostruct" without checking return value (as is done elsewhere 168 out of 189 times).
2433     	dns_rdata_tostruct(rdata, &svcb, NULL);
2434     
2435     	/*
2436     	 * Check that Alias Mode records don't have SvcParamKeys.
2437     	 */
2438     	if (svcb.priority == 0 && svcb.svclen != 0) {

@marka Possibly harmless, but assigning you for consideration.