Check if devops is valid before closing the device.
authorEtienne Dechamps <etienne@edechamps.fr>
Sat, 12 Jul 2014 12:56:01 +0000 (13:56 +0100)
committerEtienne Dechamps <etienne@edechamps.fr>
Sat, 12 Jul 2014 12:56:01 +0000 (13:56 +0100)
This fixes a segfault that occurs on exit if tinc fails before the
device is initialized (for example, if it fails to read the private
key).


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