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/block/vdi.c b/block/vdi.c
index 4a2d1ff88d..96a22b8e83 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -951,7 +951,7 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
     /* Create the vdi image (format layer) */
     ret = vdi_co_do_create(create_options, block_size, errp);
 done:
-    QDECREF(qdict);
+    qobject_unref(qdict);
     qapi_free_BlockdevCreateOptions(create_options);
     bdrv_unref(bs_file);
     return ret;