res_musiconhold.c: Remove some unnecessary RAII_VAR() usage.

* Made the moh_register() define use useful parameter names.


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@409967 f38db490-d61c-443f-a65b-d21fe96a405b
app_confbridge: Remove some noop code.

git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@409976 f38db490-d61c-443f-a65b-d21fe96a405b