we should only activate the generator in chan_misdn, when asterisk hask not yet taken the call (WAITING4DIGS state). Alerting audio will be generated fomr asterisk for example.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@65767 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_misdn.c

@@ -2531,6 +2531,8 @@ static int stop_indicate(struct chan_list *cl)
 	chan_misdn_log(3,cl->bc->port," --> None\n");
 	misdn_lib_tone_generator_stop(cl->bc);
 	ast_playtones_stop(ast);
+
+	cl->ts=NULL;
 	/*ast_deactivate_generator(ast);*/
 	
 	return 0;