netclientclock: Only ever run one clock against a specific server

If multiple net/NTP clocks are created for the same server, reuse the same
internal clock for all of them. This makes sure that we don't flood the server
with too many requests and also possibly allows faster synchronization if
there already was an earlier synchronized clock when creating a new one.
This commit is contained in:
Sebastian Dröge 2016-01-04 16:31:23 +02:00
parent 23abc425d4
commit 33dcec7b74

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