Merged revisions 8677 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

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r8677 | russell | 2006-01-25 14:14:43 -0500 (Wed, 25 Jan 2006) | 3 lines

don't call ast_update_realtime with uninitialized variables if we get a
registration with an expirey of 0 seconds (issue #6173)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@8678 65c4cc65-6c06-0410-ace0-fbb531ad65f3