Fix a typo in app_ices.

(closes issue #14765)
Reported by: timeshell
Patches:
      app_ices.svn-1.6.0.diff uploaded by timeshell (license 399)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@184801 65c4cc65-6c06-0410-ace0-fbb531ad65f3