Remove some ref leaks and a return without unlock.

There some resource leaks introduced in asterisk 10
make sure that locks are not held on return and we 
release ref's held.
........

Merged revisions 341972 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@341973 65c4cc65-6c06-0410-ace0-fbb531ad65f3