schema tree REFACTOR evaluate features during compilation

So that the compiled schema tree reflects the state
of all the features.
diff --git a/tests/utests/data/test_diff.c b/tests/utests/data/test_diff.c
index c1a1cf2..f29e80d 100644
--- a/tests/utests/data/test_diff.c
+++ b/tests/utests/data/test_diff.c
@@ -227,7 +227,7 @@
     (*state) = st = calloc(1, sizeof *st);
     assert_non_null(st);
     assert_int_equal(LY_SUCCESS, ly_ctx_new(TESTS_DIR_MODULES_YANG, 0, &st->ctx));
-    assert_non_null(ly_ctx_load_module(st->ctx, "ietf-netconf-acm", "2018-02-14"));
+    assert_non_null(ly_ctx_load_module(st->ctx, "ietf-netconf-acm", "2018-02-14", NULL));
     assert_int_equal(LY_SUCCESS, lys_parse_mem(st->ctx, schema, LYS_IN_YANG, NULL));
 
     return 0;