Add len constants to certs.c

programs/ssl/ssl_client1.c

@@ -121,7 +121,7 @@ int main( void )
 
 #if defined(POLARSSL_CERTS_C)
     ret = x509_crt_parse( &cacert, (const unsigned char *) test_ca_list,
-                          strlen( test_ca_list ) );
+                          test_ca_list_len );
 #else
     ret = 1;
     polarssl_printf("POLARSSL_CERTS_C not defined.");