tcptls: Avoid compiler warning on non-dev-mode.

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Merged revisions 420654 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 420655 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 420656 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 420657 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@420658 65c4cc65-6c06-0410-ace0-fbb531ad65f3