Merged revisions 106895 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r106895 | russell | 2008-03-07 16:51:23 -0600 (Fri, 07 Mar 2008) | 2 lines

Only start the SLA thread if SLA has actually been configured.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@106896 65c4cc65-6c06-0410-ace0-fbb531ad65f3