res_fax.c, res_fax_spandsp.c: Fix some curlies on the end of function definitions.

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Merged revisions 430685 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@430686 65c4cc65-6c06-0410-ace0-fbb531ad65f3