Fix CID 332468: Memory - illegal accesses (UNINIT)

*** CID 332468:  Memory - illegal accesses  (UNINIT)
/lib/dns/zone.c: 6613 in dns_zone_getdnsseckeys()
6607                 ISC_LIST_UNLINK(dnskeys, k1, link);
6608                 ISC_LIST_APPEND(*keys, k1, link);
6609             }
6610         }
6611     6612     failure:
>>>     CID 332468:  Memory - illegal accesses  (UNINIT)
>>>     Using uninitialized value "keyset.methods" when calling
>>>     "dns_rdataset_isassociated".
6613         if (dns_rdataset_isassociated(&keyset)) {
6614             dns_rdataset_disassociate(&keyset);
6615         }
6616         if (node != NULL) {
6617             dns_db_detachnode(db, &node);
6618         }

Fix by initializing the 'keyset' with 'dns_rdataset_init'.
71 jobs for !5241 with 1126-checkds-followup-cid332468 in 35 minutes and 17 seconds (queued for 13 seconds)
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Status Job ID Name Coverage
  Autoconf
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autoreconf

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  Precheck
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clang-format

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coccinelle

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amd64 linux
danger

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amd64 linux
misc

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amd64 linux
tarball-create

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  Build
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amd64 linux
clang:asan

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amd64 linux
clang:buster:amd64

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amd64 libvirt
clang:freebsd12:amd64

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amd64 libvirt
clang:freebsd13:amd64

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amd64 libvirt
clang:openbsd:amd64

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amd64 linux
clang:tsan

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amd64 linux
gcc:alpine3.14:amd64

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amd64 linux
gcc:asan

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amd64 linux
gcc:bionic:amd64

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amd64 linux
gcc:buster:amd64

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amd64 linux
gcc:centos7:amd64

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amd64 linux
gcc:centos8:amd64

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amd64 linux
gcc:focal:amd64

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gcc:out-of-tree

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amd64 linux
gcc:sid:amd64

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amd64 linux
gcc:softhsm2.4

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gcc:softhsm2.6

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gcc:stretch:amd64

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gcc:tarball

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gcc:tsan

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gcc:tumbleweed:amd64

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  Unit
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amd64 linux
unit:clang:asan

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amd64 linux
unit:clang:buster:amd64

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unit:clang:freebsd12:amd64

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amd64 libvirt
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amd64 libvirt
unit:clang:openbsd:amd64

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amd64 linux
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amd64 linux
unit:gcc:alpine3.14:amd64

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amd64 linux
unit:gcc:asan

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amd64 linux
unit:gcc:bionic:amd64

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unit:gcc:buster:amd64

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unit:gcc:centos7:amd64

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unit:gcc:centos8:amd64

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unit:gcc:focal:amd64

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amd64 linux
unit:gcc:sid:amd64

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amd64 linux
unit:gcc:softhsm2.4

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amd64 linux
unit:gcc:softhsm2.6

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amd64 linux
unit:gcc:stretch:amd64

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amd64 linux
unit:gcc:tsan

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amd64 linux
unit:gcc:tumbleweed:amd64

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  System
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system:clang:asan

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amd64 linux
system:clang:buster:amd64

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libvirt amd64
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amd64 libvirt
system:clang:freebsd13:amd64

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amd64 linux
system:gcc:alpine3.14:amd64

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amd64 linux
system:gcc:asan

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amd64 linux
system:gcc:bionic:amd64

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system:gcc:centos7:amd64

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amd64 linux
system:gcc:focal:amd64

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amd64 linux
system:gcc:sid:amd64

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passed #1841934
amd64 linux
system:gcc:softhsm2.4

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amd64 linux
system:gcc:softhsm2.6

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passed #1841923
amd64 linux
system:gcc:stretch:amd64

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amd64 linux
system:gcc:tsan

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passed #1841926
amd64 linux
system:gcc:tumbleweed:amd64

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failed #1841936
amd64 libvirt
system:clang:freebsd12:amd64

00:11:45

 
  Docs
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amd64 linux
docs

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  Postcheck
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amd64 linux
cppcheck

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amd64 linux
flake8

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amd64 linux
gcov

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78.0%
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amd64 linux
pylint

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amd64 linux
scan-build

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