Merged revisions 157365 via svnmerge from

Merged revisions 157365 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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r157365 | jpeeler | 2008-11-18 13:13:33 -0600 (Tue, 18 Nov 2008) | 6 lines

(closes issue #13899)
Reported by: akkornel

This fix is the result of a bug fix in ast_app_separate_args r124395. If an argument does not exist it should always be set to a null string rather than a null pointer.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@157366 65c4cc65-6c06-0410-ace0-fbb531ad65f3