Merged revisions 121751 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r121751 | crichter | 2008-06-11 11:28:04 +0200 (Mi, 11 Jun 2008) | 1 line

fixed issue with previous commit, the find_free_channel test for channels which where inuse was broken.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@121770 65c4cc65-6c06-0410-ace0-fbb531ad65f3