fix segfault in CHAN RQD log message
diff --git a/openbsc/src/abis_rsl.c b/openbsc/src/abis_rsl.c
index ec71614..f6892ca 100644
--- a/openbsc/src/abis_rsl.c
+++ b/openbsc/src/abis_rsl.c
@@ -1270,8 +1270,8 @@
 	/* check availability / allocate channel */
 	lchan = lchan_alloc(bts, lctype);
 	if (!lchan) {
-		LOGP(DRSL, LOGL_NOTICE, "%s CHAN RQD: no resources for %s 0x%x\n",
-			gsm_ts_name(lchan->ts), gsm_lchan_name(lctype), rqd_ref->ra);
+		LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n",
+		     msg->lchan->ts->trx->bts->nr, gsm_lchan_name(lctype), rqd_ref->ra);
 		counter_inc(bts->network->stats.chreq.no_channel);
 		/* FIXME: send some kind of reject ?!? */
 		return -ENOMEM;