env: efi: fix a wrong address dereference

Probably, a pointer to a variable in an inner block should not
be exposed to an outer block.

Fixes: c70f44817d46 ("efi_loader: simplify 'printenv -e'")
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
[trini: Don't make guid const now]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/cmd/nvedit_efi.c b/cmd/nvedit_efi.c
index 094c0e8..d5e9382 100644
--- a/cmd/nvedit_efi.c
+++ b/cmd/nvedit_efi.c
@@ -241,6 +241,7 @@
 		     char *const argv[])
 {
 	const efi_guid_t *guid_p = NULL;
+	efi_guid_t guid;
 	bool verbose = true;
 	efi_status_t ret;
 
@@ -254,8 +255,6 @@
 
 	for (argc--, argv++; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
 		if (!strcmp(argv[0], "-guid")) {
-			efi_guid_t guid;
-
 			if (argc == 1)
 				return CMD_RET_USAGE;
 			argc--;