From 0cb7a4491684648a819022a4e71820bbaf114734 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Fri, 13 Aug 2021 16:15:33 +0200
Subject: libgcrypt: Avoid -Wsign-compare in rijndael do_setkey()

Conflict:NA
Reference:https://git.savannah.gnu.org/cgit/grub.git/patch/?id=0cb7a4491684648a819022a4e71820bbaf114734

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Avoid a warning

  lib/libgcrypt-grub/cipher/rijndael.c:352:21: warning:
  comparison of integer expressions of different signedness:
  ‘int’ and ‘unsigned int’ [-Wsign-compare]
    352 |       for (i = 0; i < keylen; i++)
        |

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/lib/libgcrypt/cipher/rijndael.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/grub-core/lib/libgcrypt/cipher/rijndael.c b/grub-core/lib/libgcrypt/cipher/rijndael.c
index 559550b50..38e9a7c08 100644
--- a/grub-core/lib/libgcrypt/cipher/rijndael.c
+++ b/grub-core/lib/libgcrypt/cipher/rijndael.c
@@ -181,7 +181,8 @@ do_setkey (RIJNDAEL_context *ctx, const byte *key, const unsigned keylen)
   static int initialized = 0;
   static const char *selftest_failed=0;
   int rounds;
-  int i,j, r, t, rconpointer = 0;
+  unsigned int i;
+  int j, r, t, rconpointer = 0;
   int KC;
   union
   {
-- 
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