test_dsa: fix deprecation logic

Reviewed-by: NMatt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10977)

test/recipes/15-test_dsa.t

@@ -20,8 +20,7 @@ plan skip_all => 'DSA is not supported in this build' if disabled('dsa');
 plan tests => 7;
 
 my $deprecated_dsa =
-    disabled('deprecated')
-    && (!defined config('api') || config('api') >= 30000);
+    disabled('deprecated') || !defined config('api') || config('api') >= 30000;
 
 require_ok(srctop_file('test','recipes','tconversion.pl'));