alternate fix for a0e91001 with a slightly more efficient function

src/mod/applications/mod_sms/mod_sms.c

@@ -447,7 +447,7 @@ SWITCH_STANDARD_CHAT_APP(reply_function)
 		switch_ivr_create_message_reply(&reply, message, SMS_CHAT_PROTO);
 
 		if (!zstr(data)) {
-			switch_event_add_body(reply, "%s", data);
+			switch_event_set_body(reply, data);
 		}
 
 		switch_core_chat_deliver(proto, &reply);