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, 2 insertions, 2 deletions

diff --git a/block/gluster.c b/block/gluster.c
index 4adc1a875b..55be566f6d 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -650,7 +650,7 @@ static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
         }
         gsconf = NULL;
 
-        QDECREF(backing_options);
+        qobject_unref(backing_options);
         backing_options = NULL;
         g_free(str);
         str = NULL;
@@ -663,7 +663,7 @@ out:
     qapi_free_SocketAddress(gsconf);
     qemu_opts_del(opts);
     g_free(str);
-    QDECREF(backing_options);
+    qobject_unref(backing_options);
     errno = EINVAL;
     return -errno;
 }