Avoid redundant allocation in ikev2_prfplus()

from markus@

diff --git a/sbin/iked/ikev2.c b/sbin/iked/ikev2.c
index d5cc0ed..c0add7c 100644 (file)
--- a/sbin/iked/ikev2.c
+++ b/sbin/iked/ikev2.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: ikev2.c,v 1.385 2024/03/02 16:16:07 tobhe Exp $       */
+/*     $OpenBSD: ikev2.c,v 1.386 2024/03/21 22:08:49 tobhe Exp $       */
 
 /*
  * Copyright (c) 2019 Tobias Heider <tobias.heider@stusta.de>
@@ -5933,8 +5933,7 @@ ikev2_prfplus(struct iked_hash *prf, struct ibuf *key, struct ibuf *seed,
 
        for (i = 0; i < rlen; i++) {
                if (t1 != NULL) {
-                       t2 = ibuf_new(ibuf_data(t1), ibuf_size(t1));
-                       ibuf_free(t1);
+                       t2 = t1;
                } else
                        t2 = ibuf_new(NULL, 0);
                t1 = ibuf_new(NULL, hash_keylength(prf));