From 3078fa74aa2d1350f0a71480d2d772d711adf519 Mon Sep 17 00:00:00 2001
From: Thomas Frauendorfer | Miray Software <address@hidden>
Date: Wed, 11 Sep 2019 11:16:03 +0200
Subject: [PATCH] Only call ver->close if it is set in verifier

The 'fail:' branch in Verifiers unconditionally calls ver->close
but some verifiers like shim_lock  have no close method set.
If verification with such a verifier fails then grub will hang
---
 grub-core/commands/verifiers.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 grub-core/commands/verifiers.c

diff --git a/grub-core/commands/verifiers.c b/grub-core/commands/verifiers.c
old mode 100644
new mode 100755
index 0dde481..7b9297c
--- a/grub-core/commands/verifiers.c
+++ b/grub-core/commands/verifiers.c
@@ -196,7 +196,8 @@ grub_verifiers_open (grub_file_t io, enum grub_file_type type)
   return ret;
 
  fail:
-  ver->close (context);
+  if (ver->close)
+    ver->close (context);
  fail_noclose:
   verified_free (verified);
   grub_free (ret);
-- 
1.9.1