Merged revisions 336167 via svnmerge from

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

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  r336167 | irroot | 2011-09-16 12:12:03 +0200 (Fri, 16 Sep 2011) | 22 lines
  
  Merged revisions 336166 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r336166 | irroot | 2011-09-16 12:09:17 +0200 (Fri, 16 Sep 2011) | 16 lines
    
    The round robin routing routine in chan_misdn.c is broken.
    
    it rotates between ports but never checks the channels in the ports.
    
    i have extensivly tested it and verified it works on 1 upto 4 ports.
    before the patch only 1 out of each port was used now all are used as
    expected.
    
    (closes issue ASTERISK-18413)
    Reported by: irroot
    Tested by: irroot
    Reviewed by: irroot
        
    Review: https://reviewboard.asterisk.org/r/1410/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@336168 65c4cc65-6c06-0410-ace0-fbb531ad65f3