auth, check return value of getCatalogMembers()

[mind04]

Short description

Parse errors in getCatalogMembers() did result in a valid but empty catalog zone.

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Pull Request Test Coverage Report for Build 13030285875

Details

• 1 of 6 (16.67%) changed or added relevant lines in 1 file are covered.
• 52 unchanged lines in 10 files lost coverage.
• Overall coverage decreased (-0.003%) to 64.696%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pdns/tcpreceiver.cc	1	6	16.67%

Files with Coverage Reduction	New Missed Lines	%
pdns/distributor.hh	2	51.86%
pdns/tsigverifier.cc	3	77.22%
pdns/remote_logger.cc	3	54.26%
pdns/recursordist/recpacketcache.hh	3	89.55%
modules/gpgsqlbackend/spgsql.cc	3	67.7%
pdns/recursordist/pdns_recursor.cc	3	72.65%
pdns/recursordist/test-syncres_cc1.cc	5	89.76%
pdns/iputils.cc	6	56.07%
pdns/recursordist/syncres.cc	10	80.07%
pdns/recursordist/rec-system-resolve.cc	14	48.98%

Totals
Change from base Build 13005788889:	-0.003%
Covered Lines:	127817
Relevant Lines:	166475

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💛 - Coveralls