Merged revisions 57798 via svnmerge from

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

........
r57798 | file | 2007-03-04 23:19:53 -0500 (Sun, 04 Mar 2007) | 2 lines

Don't allow a NULL pointer to reach ast_frdup. (issue #9155 reported by cmaj)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@57799 65c4cc65-6c06-0410-ace0-fbb531ad65f3