gprs_bssgp_pcu: fixup: fix length check in gprs_bssgp_pcu_rx_dl_ud()

Change-Id: I7d49b27a615350a7707154aa3cc903db7c1df374
Fixes: I7f84bd776cc780a45880f136107f6e0bc56241d1
diff --git a/src/gprs_bssgp_pcu.cpp b/src/gprs_bssgp_pcu.cpp
index 080245a..ccf233a0 100644
--- a/src/gprs_bssgp_pcu.cpp
+++ b/src/gprs_bssgp_pcu.cpp
@@ -108,7 +108,7 @@
 
 	data = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU);
 	len = TLVP_LEN(tp, BSSGP_IE_LLC_PDU);
-	if (len > sizeof(LLC_MAX_LEN))
+	if (len > LLC_MAX_LEN)
 	{
 		LOGP(DBSSGP, LOGL_NOTICE, "BSSGP TLLI=0x%08x Rx UL-UD IE_LLC_PDU too large\n", tlli);
 		return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg);