func_cdr: Fix CDR_PROP payload leak

Remove duplicate allocation of payload, preventing leak.

ASTERISK-24455 #close
Reported by: Corey Farrell
Review: https://reviewboard.asterisk.org/r/4113/
........

Merged revisions 426252 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@426253 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_cdr.c

@@ -540,8 +540,7 @@ static int cdr_prop_write(struct ast_channel *chan, const char *cmd, char *parse
 		     const char *value)
 {
 	RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);
-	RAII_VAR(struct cdr_func_payload *, payload,
-		ao2_alloc(sizeof(*payload), NULL), ao2_cleanup);
+	RAII_VAR(struct cdr_func_payload *, payload, NULL, ao2_cleanup);
 	RAII_VAR(struct stasis_message_router *, router, ast_cdr_message_router(), ao2_cleanup);
 
 	if (!chan) {