Remove unnecessarily shadowed local variable

The same local X509 *cert variable can be used for both the X509_dup()
calls.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/utils/http_curl.c

@@ -1099,7 +1099,6 @@ static int ocsp_resp_cb(SSL *s, void *arg)
 				certs = NULL;
 			}
 			if (ctx->peer_issuer_issuer) {
-				X509 *cert;
 				cert = X509_dup(ctx->peer_issuer_issuer);
 				if (cert && !sk_X509_push(certs, cert)) {
 					tls_show_errors(