[PATCH] test: only flag parse tests as little-endian-only in test-gvariant-message

The blanket `l_test_set_default_flags(L_TEST_FLAG_LITTLE_ENDIAN_ONLY)`
marks all gvariant-message tests as little-endian-only, but the build
and rewind tests work correctly on big-endian. This causes an XPASS
(unexpected pass) on big-endian systems, which autotools treats as a
test suite failure.

This commit applies the flag only to the three parse tests that compare
against hardcoded little-endian byte sequences.
---
 unit/test-gvariant-message.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/unit/test-gvariant-message.c b/unit/test-gvariant-message.c
index 2df7c9b..8f8589f 100644
--- a/unit/test-gvariant-message.c
+++ b/unit/test-gvariant-message.c
@@ -386,22 +386,22 @@ static void builder_rewind(const void *data)
 
 int main(int argc, char *argv[])
 {
 	l_test_init(&argc, &argv);
 
-	l_test_set_default_flags(L_TEST_FLAG_LITTLE_ENDIAN_ONLY);
-
-	l_test_add("Basic 1 (parse)", parse_basic_1, &message_data_basic_1);
+	/* Parse tests compare against little-endian reference data */
+	l_test_add_data_func("Basic 1 (parse)", &message_data_basic_1,
+				parse_basic_1, L_TEST_FLAG_LITTLE_ENDIAN_ONLY);
 	l_test_add("Basic 1 (build)", build_basic_1, &message_data_basic_1);
 
-	l_test_add("Complex 1 (parse)", check_complex_1,
-						&message_data_complex_1);
+	l_test_add_data_func("Complex 1 (parse)", &message_data_complex_1,
+				check_complex_1, L_TEST_FLAG_LITTLE_ENDIAN_ONLY);
 	l_test_add("Complex 1 (build)", build_complex_1,
 						&message_data_complex_1);
 
-	l_test_add("Empty signature (parse)", check_empty_sig,
-						&message_data_empty_sig);
+	l_test_add_data_func("Empty signature (parse)", &message_data_empty_sig,
+				check_empty_sig, L_TEST_FLAG_LITTLE_ENDIAN_ONLY);
 	l_test_add("Empty signature (build)", build_empty_sig,
 						&message_data_empty_sig);
 
 	l_test_add("Message Builder Rewind Complex 1", builder_rewind,
 						&message_data_complex_1);
-- 
2.53.0