Fix compile error caused by review 4138

There is no procedure called ast_closeframe, fix code to use
ast_closestream.

Reported By: Matt Jordan
........

Merged revisions 427087 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@427088 f38db490-d61c-443f-a65b-d21fe96a405b