Commit the remainder of r398523

This is a missing part of the commit in revision 398523 that corrects
the name of a variable.

(issue ASTERISK-22435)
........

Merged revisions 398576 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@398577 65c4cc65-6c06-0410-ace0-fbb531ad65f3