From 9a4548c819c63b41358072d645454ad7ea56cd2b Mon Sep 17 00:00:00 2001
From: Dmitry Belyavskiy <beldmit@gmail.com>
Date: Sat, 13 Jun 2020 16:35:56 +0300
Subject: [PATCH] Avoid some warnings

---
 test/04-pkey.t | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/04-pkey.t b/test/04-pkey.t
index f5e654d..b4897e9 100644
--- a/test/04-pkey.t
+++ b/test/04-pkey.t
@@ -315,7 +315,7 @@ MIGgMBcGCCqFAwcBAQECMAsGCSqFAwcBAgECAwOBhAAEgYCPdAER26Ym73DSUXBamTLJcntdV3oZ7RRx
         # Bob: derive
         system("openssl pkeyutl -derive -inkey bob.prv -keyform PEM -peerkey alice.pub.der -peerform DER -pkeyopt ukmhex:0100000000000000 -out secret_b.bin");
         like(`openssl dgst -sha256 -r secret_b.bin`, qr/^$secrethash/, "Compute shared key:$id:Bob");
-        if ($malice ne "") {
+        if (defined $malice && $malice ne "") {
             # Malice: negative test -- this PEM is in the small subgroup
             open $F,">",'malice.pub';
             print $F $malice;
-- 
2.39.2