Aram Sargsyan c584899b1a Fix catz db update callback registration logic error (take two) ...

Please see the 998765fea5 commit for
the description of the original issue. The commit had fixed the
logic error, but it was reintroduced again later with the
a1afa31a5a commit, where the check of
the 'db_registered' flag was removed in dns__catz_update_cb(). The
check was removed, because the registration function was made
idempotent, so double registration is not an issue, but the check
also prevented from unneeded registration, on which the original
fix relied.

This commit just removes the update callback registration code from
the dns__catz_update_cb() function instead of bringing back the check,
because after code flow analysis, it is now clear that it's not required
at all. The "call onupdate() artificially" comment (which was mentioned
by the removed code) is speaking about the dns_catz_dbupdate_callback()
function, which is called by server.c on (re)configuration, and that
function already takes care of update callback's registration since the
998765fea5 commit was applied, so there
is no need to do that here again.

2023-11-14 08:59:48 +00:00

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