[PATCH 14/14] tpm2: remove the unnecessary variables

[Gary Lin]

Since the NULL 'encryptedSalt' of 'TPM2_StartAuthSession' is handled as
an empty TPM2B structure, there is no need to declare an empty salt.
As for 'nonceTPM', we don't use in the following TPM2 commands, so we
can safely ignore it.

Signed-off-by: Gary Lin <glin@suse.com>
---
 grub-core/tpm2/module.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/grub-core/tpm2/module.c b/grub-core/tpm2/module.c
index bebdecd1c..580c1f972 100644
--- a/grub-core/tpm2/module.c
+++ b/grub-core/tpm2/module.c
@@ -311,9 +311,7 @@ grub_tpm2_protector_srk_recover (const struct 
grub_tpm2_protector_context *ctx,
   grub_size_t sealed_key_size;
   TPM_HANDLE srk_handle;
   TPM2B_NONCE nonceCaller = { 0 };
-  TPM2B_ENCRYPTED_SECRET salt = { 0 };
   TPMT_SYM_DEF symmetric = { 0 };
-  TPM2B_NONCE nonceTPM = { 0 };
   TPMI_SH_AUTH_SESSION session;
   TPML_PCR_SELECTION pcrSel = {
     .count = 1,
@@ -364,9 +362,9 @@ grub_tpm2_protector_srk_recover (const struct 
grub_tpm2_protector_context *ctx,
   nonceCaller.size = TPM_SHA256_DIGEST_SIZE;
   symmetric.algorithm = TPM_ALG_NULL;
 
-  rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, 0, &nonceCaller, &salt,
+  rc = TPM2_StartAuthSession (TPM_RH_NULL, TPM_RH_NULL, NULL, &nonceCaller, 
NULL,
                              TPM_SE_POLICY, &symmetric, TPM_ALG_SHA256,
-                             &session, &nonceTPM, 0);
+                             &session, NULL, NULL);
   if (rc)
     {
       grub_error (err, N_("Failed to start auth session (TPM2_StartAuthSession 
"
-- 
2.35.3