qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF

Now that we can safely call QOBJECT() on QObject * as well as its
subtypes, we can have macros qobject_ref() / qobject_unref() that work
everywhere instead of having to use QINCREF() / QDECREF() for QObject
and qobject_incref() / qobject_decref() for its subtypes.

The replacement is mechanical, except I broke a long line, and added a
cast in monitor_qmp_cleanup_req_queue_locked().  Unlike
qobject_decref(), qobject_unref() doesn't accept void *.

Note that the new macros evaluate their argument exactly once, thus no
need to shout them.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Rebased, semantic conflict resolved, commit message improved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/test-qmp-event.c b/tests/test-qmp-event.c
index bb1036615f..3a7c227a1d 100644
--- a/tests/test-qmp-event.c
+++ b/tests/test-qmp-event.c
@@ -133,7 +133,7 @@ static void event_prepare(TestEventData *data,
 static void event_teardown(TestEventData *data,
                            const void *unused)
 {
-    QDECREF(data->expect);
+    qobject_unref(data->expect);
     test_event_data = NULL;
 
     g_mutex_unlock(&test_event_lock);