[PATCH] extract-cert: add static to local data

[Masahiro Yamada]

Fix the following warning from sparse:

  scripts/extract-cert.c:74:5: warning: symbol 'kbuild_verbose' was not 
declared. Should it be static?

Signed-off-by: Masahiro Yamada <masahi...@kernel.org>
---

 scripts/extract-cert.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/extract-cert.c b/scripts/extract-cert.c
index b071bf476fea..3bc48c726c41 100644
--- a/scripts/extract-cert.c
+++ b/scripts/extract-cert.c
@@ -71,7 +71,7 @@ static void drain_openssl_errors(void)
 static const char *key_pass;
 static BIO *wb;
 static char *cert_dst;
-int kbuild_verbose;
+static int kbuild_verbose;
 
 static void write_cert(X509 *x509)
 {
-- 
2.25.1