hnbgw_rua.c: log: fix integer format for cN_DomainIndicator

Fixes: CID#135219
Change-Id: I32c11100c87a59f34d7c1fefd2f0037e5d63f0e0
diff --git a/src/hnbgw_rua.c b/src/hnbgw_rua.c
index b2b8792..e918c47 100644
--- a/src/hnbgw_rua.c
+++ b/src/hnbgw_rua.c
@@ -198,7 +198,7 @@
 		is_ps = true;
 		break;
 	default:
-		LOGP(DRUA, LOGL_ERROR, "Unsupported Domain %u\n",
+		LOGP(DRUA, LOGL_ERROR, "Unsupported Domain %ld\n",
 		     cN_DomainIndicator);
 		return -1;
 	}