stop what i think is a memory leak in case Dial fails to

connect to a channel.

Before committing to 1.4 i would like some other people to
review and test this fix - thanks.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48574 65c4cc65-6c06-0410-ace0-fbb531ad65f3