EXIT() may mean return(). That's confusing, so let's have it really mean

exit() in whatever way works for the intended platform, and define
OPENSSL_EXIT() to have the old meaning (the name is of course because
it's only used in the openssl program)

apps/engine.c

@@ -516,5 +516,5 @@ end:
 	sk_pop_free(post_cmds, identity);
 	if (bio_out != NULL) BIO_free_all(bio_out);
 	apps_shutdown();
-	EXIT(ret);
+	OPENSSL_EXIT(ret);
 	}