Iñaki Arenaza 4943a856d0 MDL-39323 Make sure start_tls config value is defined
This has been introduced in 2.5, so when upgrading from previous versions
make sure we set a default value. Otherwise, we get a notice about it
being undefined when we try to use it (and we always try to use it!).
2013-05-20 13:34:05 +02:00
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