Only use tcpdns timer if it's initialized.

(cherry picked from commit 4b9962d4)
Status Job ID Name Coverage
  Precheck
canceled #735939
amd64 linux
🐞:sid:amd64

00:00:36

passed #735938
amd64 linux
💾:sid:amd64

00:00:23

passed #735936
amd64 linux
autoreconf:sid:amd64

00:00:21

passed #735937
amd64 linux
misc:sid:amd64

00:00:19

 
  Build
canceled #735955
amd64 linux
asan:sid:amd64

00:00:08

canceled #735962
amd64 freebsd
clang:freebsd11.3:amd64

00:00:01

canceled #735963
amd64 freebsd
clang:freebsd12.0:amd64

canceled #735964
amd64 libvirt
clang:openbsd6.6:amd64

canceled #735959
amd64 linux
clang:stretch:amd64

00:00:06

canceled #735960
i386 linux
clang:stretch:i386

00:00:06

canceled #735940
amd64 linux
gcc:alpine3.11:amd64

00:00:15

canceled #735954
amd64 linux
gcc:bionic:amd64

00:00:09

canceled #735946
amd64 linux
gcc:buster:amd64

00:00:13

canceled #735941
amd64 linux
gcc:centos6:amd64

00:00:15

canceled #735942
amd64 linux
gcc:centos7:amd64

00:00:14

canceled #735943
amd64 linux
gcc:centos8:amd64

00:00:14

canceled #735952
amd64 linux
gcc:fedora31:amd64

00:00:10

canceled #735944
amd64 linux
gcc:jessie:amd64

00:00:14

canceled #735947
amd64 linux
gcc:sid:amd64

00:00:13

canceled #735949
arm64 linux
gcc:sid:arm64

00:00:09

canceled #735950
i386 linux
gcc:sid:i386

00:00:11

canceled #735945
amd64 linux
gcc:stretch:amd64

00:00:14

canceled #735951
amd64 linux
gcc:tumbleweed:amd64

00:00:10

canceled #735953
amd64 linux
gcc:xenial:amd64

00:00:09

canceled #735966
amd64 windows
msvc:windows:amd64

00:00:01

canceled #735958
amd64 linux
mutexatomics:sid:amd64

00:00:06

canceled #735965
amd64 linux
nolibtool:sid:amd64

00:00:04

canceled #735948
amd64 linux
oot:sid:amd64

00:00:12

canceled #735961
amd64 linux
pkcs11:sid:amd64

00:00:05

canceled #735957
amd64 linux
rwlock:sid:amd64

00:00:07

canceled #735956
amd64 linux
tsan:buster:amd64

00:00:08

 
  Unit
canceled #735981
amd64 linux
unit:asan:sid:amd64

canceled #735987
amd64 freebsd
unit:clang:freebsd11.3:amd64

canceled #735988
amd64 freebsd
unit:clang:freebsd12.0:amd64

canceled #735985
amd64 linux
unit:clang:stretch:amd64

canceled #735967
amd64 linux
unit:gcc:alpine3.11:amd64

canceled #735980
amd64 linux
unit:gcc:bionic:amd64

canceled #735973
amd64 linux
unit:gcc:buster:amd64

canceled #735968
amd64 linux
unit:gcc:centos6:amd64

canceled #735969
amd64 linux
unit:gcc:centos7:amd64

canceled #735970
amd64 linux
unit:gcc:centos8:amd64

canceled #735978
amd64 linux
unit:gcc:fedora31:amd64

canceled #735971
amd64 linux
unit:gcc:jessie:amd64

canceled #735974
amd64 linux
unit:gcc:sid:amd64

canceled #735975
arm64 linux
unit:gcc:sid:arm64

canceled #735976
i386 linux
unit:gcc:sid:i386

canceled #735972
amd64 linux
unit:gcc:stretch:amd64

canceled #735977
amd64 linux
unit:gcc:tumbleweed:amd64

canceled #735979
amd64 linux
unit:gcc:xenial:amd64

canceled #735984
amd64 linux
unit:mutexatomics:sid:amd64

canceled #735989
amd64 linux
unit:nolibtool:sid:amd64

canceled #735986
amd64 linux
unit:pkcs11:sid:amd64

canceled #735983
amd64 linux
unit:rwlock:sid:amd64

canceled #735982
amd64 linux allowed to fail
unit:tsan:buster:amd64

 
  System
canceled #736004
amd64 linux
system:asan:sid:amd64

canceled #736009
amd64 freebsd
system:clang:freebsd11.3:amd64

canceled #736010
amd64 freebsd
system:clang:freebsd12.0:amd64

canceled #735990
amd64 linux
system:gcc:alpine3.11:amd64

canceled #736003
amd64 linux
system:gcc:bionic:amd64

canceled #735996
amd64 linux
system:gcc:buster:amd64

canceled #735991
amd64 linux
system:gcc:centos6:amd64

canceled #735992
amd64 linux
system:gcc:centos7:amd64

canceled #735993
amd64 linux
system:gcc:centos8:amd64

canceled #736001
amd64 linux
system:gcc:fedora31:amd64

canceled #735994
amd64 linux
system:gcc:jessie:amd64

canceled #735997
amd64 linux
system:gcc:sid:amd64

canceled #735998
arm64 linux
system:gcc:sid:arm64

canceled #735999
i386 linux
system:gcc:sid:i386

canceled #735995
amd64 linux
system:gcc:stretch:amd64

canceled #736000
amd64 linux
system:gcc:tumbleweed:amd64

canceled #736002
amd64 linux
system:gcc:xenial:amd64

canceled #736007
amd64 linux
system:mutexatomics:sid:amd64

canceled #736011
amd64 linux
system:nolibtool:sid:amd64

canceled #736008
amd64 linux
system:pkcs11:sid:amd64

canceled #736006
amd64 linux
system:rwlock:sid:amd64

canceled #736005
amd64 linux allowed to fail
system:tsan:buster:amd64

 
  Docs
canceled #736012
amd64 linux
docs:sid:amd64

00:00:05

 
  Postcheck
canceled #736014
amd64 linux
cppcheck:gcc:sid:amd64

canceled #736015
arm64 linux
cppcheck:gcc:sid:arm64

canceled #736013
amd64 linux
scan-build:buster:amd64

00:00:05