Merged revisions 331576 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/10

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  r331576 | rmudgett | 2011-08-11 16:42:21 -0500 (Thu, 11 Aug 2011) | 16 lines
  
  Merged revisions 331575 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r331575 | rmudgett | 2011-08-11 16:39:58 -0500 (Thu, 11 Aug 2011) | 9 lines
    
    Segfault in shell_helper in func_shell.c.
    
    The return value of popen() was not checked for failure to open.
    
    (closes issue ASTERISK-18109)
    JIRA SWP-3633
    Reported by: Michael Myles
    Tested by: rmudgett
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@331577 65c4cc65-6c06-0410-ace0-fbb531ad65f3