===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/sshsig.c,v
retrieving revision 1.29
retrieving revision 1.30
diff -u -r1.29 -r1.30
--- src/usr.bin/ssh/sshsig.c	2022/03/30 04:27:51	1.29
+++ src/usr.bin/ssh/sshsig.c	2022/08/19 03:06:30	1.30
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshsig.c,v 1.29 2022/03/30 04:27:51 djm Exp $ */
+/* $OpenBSD: sshsig.c,v 1.30 2022/08/19 03:06:30 djm Exp $ */
 /*
  * Copyright (c) 2019 Google LLC
  *
@@ -489,7 +489,7 @@
 {
 	char *hex, rbuf[8192], hash[SSH_DIGEST_MAX_LENGTH];
 	ssize_t n, total = 0;
-	struct ssh_digest_ctx *ctx;
+	struct ssh_digest_ctx *ctx = NULL;
 	int alg, oerrno, r = SSH_ERR_INTERNAL_ERROR;
 	struct sshbuf *b = NULL;
 
@@ -512,7 +512,6 @@
 				continue;
 			oerrno = errno;
 			error_f("read: %s", strerror(errno));
-			ssh_digest_free(ctx);
 			errno = oerrno;
 			r = SSH_ERR_SYSTEM_ERROR;
 			goto out;
@@ -547,9 +546,11 @@
 	/* success */
 	r = 0;
  out:
+	oerrno = errno;
 	sshbuf_free(b);
 	ssh_digest_free(ctx);
 	explicit_bzero(hash, sizeof(hash));
+	errno = oerrno;
 	return r;
 }