Fix several unreleased mutex locks that cause problem with processing calls
Reported by: Daniel Bohling
Tested by: Daniel Bohling

(Closes issue ASTERISK-21119)



git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/1.8@382409 f38db490-d61c-443f-a65b-d21fe96a405b