Set local variable to 0 to avoid build error

Signed-off-by: NPaul Yang <paulyang.inf@gmail.com>
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3614)

test/x509_check_cert_pkey_test.c

@@ -27,7 +27,7 @@ static int test_x509_check_cert_pkey(const char *c, const char *k,
     X509 *x509 = NULL;
     X509_REQ *x509_req = NULL;
     EVP_PKEY *pkey = NULL;
-    int ret = 0, type = 0, expected = 0, result;
+    int ret = 0, type = 0, expected = 0, result = 0;
 
     /*
      * we check them first thus if fails we don't need to do