sl: fixed use of forward_reply_nocb() in sl_forward_reply()

- previous related commit was not doing it

(cherry picked from commit 4133a44cc9b1702b3a36b9386464983d2fe9aedc)
(cherry picked from commit 91241caa2c2bc51b421d024c790493fdaf24c8ee)

modules/sl/sl.c

@@ -433,7 +433,7 @@ static int w_sl_forward_reply(sip_msg_t* msg, str* code, str* reason)
 			goto restore;
 		}
 	}
-	ret = forward_reply(msg);
+	ret = forward_reply_nocb(msg);
 restore:
 	if(reason!=NULL) {
 		if(ldel!=NULL) {