Fix spacing nit in test/ectest.c

(cherry picked from commit 65936a56461fe09e8c81bca45122af5adcfabb00)

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/9813)