ooh323c: Fix gcc 4.6.3 compiler warnings.
........

Merged revisions 404212 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@404219 f38db490-d61c-443f-a65b-d21fe96a405b