[libsecret] test-item: Fix GHashTable leak

[Christophe Fergeau <teuf src gnome org>]

commit 66888a1e6aacb8fdb2ffd7d119541a32987505a9
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Sat Oct 17 22:09:07 2015 +0200

    test-item: Fix GHashTable leak
    
    This fixes:
    ==16901== 248 (88 direct, 160 indirect) bytes in 1 blocks are definitely lost in loss record 1,108 of 
1,154
    ==16901==    at 0x4A06C50: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
    ==16901==    by 0x36E564F679: g_malloc (gmem.c:97)
    ==16901==    by 0x36E5666CD2: g_slice_alloc (gslice.c:1007)
    ==16901==    by 0x36E563860D: g_hash_table_new_full (ghash.c:711)
    ==16901==    by 0x4047B2: test_set_attributes_async (test-item.c:493)
    ==16901==    by 0x36E566FB92: test_case_run (gtestutils.c:2124)
    ==16901==    by 0x36E566FB92: g_test_run_suite_internal (gtestutils.c:2185)
    ==16901==    by 0x36E566FD5A: g_test_run_suite_internal (gtestutils.c:2196)
    ==16901==    by 0x36E56700DA: g_test_run_suite (gtestutils.c:2249)
    ==16901==    by 0x36E5670110: g_test_run (gtestutils.c:1553)
    ==16901==    by 0x4C5A0EA: egg_tests_run_with_loop (egg-testing.c:167)
    ==16901==    by 0x406AAE: main (test-item.c:880)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756766

 libsecret/test-item.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libsecret/test-item.c b/libsecret/test-item.c
index 8c3ef27..2221d8b 100644
--- a/libsecret/test-item.c
+++ b/libsecret/test-item.c
@@ -497,6 +497,7 @@ test_set_attributes_async (Test *test,
        g_hash_table_insert (attributes, "number", "5");
        secret_item_set_attributes (item, &MOCK_SCHEMA, attributes, NULL, on_async_result, &result);
        g_assert (result == NULL);
+       g_hash_table_unref (attributes);
 
        egg_test_wait ();