[debug] Introduce DREF debug category for reference counting
diff --git a/openbsc/src/gsm_subscriber_base.c b/openbsc/src/gsm_subscriber_base.c
index 48374ea..0570061 100644
--- a/openbsc/src/gsm_subscriber_base.c
+++ b/openbsc/src/gsm_subscriber_base.c
@@ -137,7 +137,7 @@
 struct gsm_subscriber *subscr_get(struct gsm_subscriber *subscr)
 {
 	subscr->use_count++;
-	DEBUGP(DCC, "subscr %s usage increases usage to: %d\n",
+	DEBUGP(DREF, "subscr %s usage increases usage to: %d\n",
 			subscr->extension, subscr->use_count);
 	return subscr;
 }
@@ -145,7 +145,7 @@
 struct gsm_subscriber *subscr_put(struct gsm_subscriber *subscr)
 {
 	subscr->use_count--;
-	DEBUGP(DCC, "subscr %s usage decreased usage to: %d\n",
+	DEBUGP(DREF, "subscr %s usage decreased usage to: %d\n",
 			subscr->extension, subscr->use_count);
 	if (subscr->use_count <= 0)
 		subscr_free(subscr);