major dialplan functions update

deprecate LANGUAGE() and MUSICCLASS(), in favor of CHANNEL()


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@9674 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/module.h

@@ -336,7 +336,7 @@ void ast_unregister_atexit(void (*func)(void));
  \
 	if (!(u=calloc(1,sizeof(*u)))) { \
 		ast_log(LOG_WARNING, "Out of memory\n"); \
-		return ""; \
+		return -1; \
 	} \
 	ast_mutex_lock(&localuser_lock); \
 	u->chan = chan; \