Merged revisions 376167 via svnmerge from

Merged revisions 376167 via svnmerge from
file:///srv/subversion/repos/asterisk/branches/10

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  r376167 | file | 2012-11-12 14:44:56 -0600 (Mon, 12 Nov 2012) | 14 lines

  Properly check if the "Context" and "Extension" headers are empty in a ShowDialPlan action.

  The code which handles the ShowDialPlan action wrongly assumed that a non-NULL return value
  from the function which retrieves headers from an action indicates that the header has a
  value. This is incorrect and the contents must be checked to see if they are blank.

  (closes issue ASTERISK-20628)
  Reported by: jkroon
  Patches:
       asterisk-showdialplan-incorrect-error.patch uploaded by jkroon
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  Merged revisions 376166 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10-digiumphones@376194 65c4cc65-6c06-0410-ace0-fbb531ad65f3