test for key != NULL on error path

(cherry picked from commit 9bad78cbc2f4c8cacb4c4b82d4207fd45ea3d598)

diff --git a/bin/tests/dst/t_dst.c b/bin/tests/dst/t_dst.c
index 8547aa44d1e8a4640458992bb6f254c4acce2af9..32595b1fdbf58d8b4afc43da642f05e94b1b0e00 100644 (file)
--- a/bin/tests/dst/t_dst.c
+++ b/bin/tests/dst/t_dst.c
@@ -381,7 +381,8 @@ io(dns_name_t *name, isc_uint16_t id, isc_uint16_t alg, int type,
        cleandir(tmp);
 
  failure:
-       dst_key_free(&key);
+       if (key != NULL)
+               dst_key_free(&key);
 }
 
 static void