Call object_unparent() in graphic_console_close() to remove the
console from /backend/console[N]. This drops the QOM tree
reference, while the initial object_new() reference keeps the
console alive for potential reuse.

When graphic_console_init() reuses a closed console, re-register
it in the QOM tree.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 ui/console.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ui/console.c b/ui/console.c
index db9aaf85f59..a8a2a247d8f 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1140,6 +1140,9 @@ QemuConsole *qemu_graphic_console_create(DeviceState *dev, uint32_t head,
         trace_console_gfx_reuse(s->index);
         width = qemu_console_get_width(s, 0);
         height = qemu_console_get_height(s, 0);
+        if (s->ds->initialized) {
+            qemu_console_add_to_qom(s);
+        }
     } else {
         trace_console_gfx_new();
         s = (QemuConsole *)object_new(TYPE_QEMU_GRAPHIC_CONSOLE);
@@ -1180,6 +1183,7 @@ void qemu_graphic_console_close(QemuConsole *con)
     }
     surface = qemu_create_placeholder_surface(width, height, unplugged);
     qemu_console_set_surface(con, surface);
+    object_unparent(OBJECT(con));
 }
 
 QemuConsole *qemu_console_lookup_default(void)

-- 
2.54.0