Pass gprc_rlcmac_pdch to tbf_check_polling

Change-Id: I1c7140b35b7c93d3df4156841e908d3b44d7336d
diff --git a/src/tbf_ul_ack_fsm.c b/src/tbf_ul_ack_fsm.c
index 9501190..a188b08 100644
--- a/src/tbf_ul_ack_fsm.c
+++ b/src/tbf_ul_ack_fsm.c
@@ -59,7 +59,7 @@
 	struct GprsMs *ms = tbf_ms(ul_tbf_as_tbf(tbf));
 
 	if (final) {
-		rc = tbf_check_polling(ul_tbf_as_tbf(tbf), d->fn, d->pdch->ts_no, &new_poll_fn, &rrbp);
+		rc = tbf_check_polling(ul_tbf_as_tbf(tbf), d->pdch, d->fn, &new_poll_fn, &rrbp);
 		if (rc < 0)
 			return NULL;
 	}