[U-Boot] [PATCH v2] cmd: efidebug: fix a build error in show_efi_boot_opt()

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

I detected the following error in sandbox with Clang on Travis CI:
    +cmd/efidebug.c:703:15: error: result of comparison of constant
     9223372036854775822 with expression of type 'int' is always false
     [-Werror,-Wtautological-constant-out-of-range-compare]
    +        else if (ret == EFI_NOT_FOUND)
    +                 ~~~ ^  ~~~~~~~~~~~~~

Simply changing a type of 'ret' to efi_status_t will fix this error.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
---
 cmd/efidebug.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index ef97e19d0735..1fff4390deae 100644
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -684,7 +684,7 @@ static void show_efi_boot_opt(int id)
 	efi_guid_t guid;
 	void *data = NULL;
 	efi_uintn_t size;
-	int ret;
+	efi_status_t ret;
 
 	sprintf(var_name, "Boot%04X", id);
 	p = var_name16;
@@ -693,7 +693,7 @@ static void show_efi_boot_opt(int id)
 
 	size = 0;
 	ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, NULL));
-	if (ret == (int)EFI_BUFFER_TOO_SMALL) {
+	if (ret == EFI_BUFFER_TOO_SMALL) {
 		data = malloc(size);
 		ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size,
 						data));
-- 
2.24.0