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qxl: fix segfault

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Add missing sanity check.
Reproducer: run qemu with "-device qxl" but without "-spice ..."

Fixes: 0d9b90ce5c73 ("console: make QMP/HMP screendump run in coroutine")
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20201124122936.30588-1-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2020-11-24 13:29:36 +01:00
parent dd3d2340c4
commit 6fc5183a65
1 changed files with 3 additions and 1 deletions

4
ui/console.c

@ -264,7 +264,9 @@ static void gui_setup_refresh(DisplayState *ds)
void graphic_hw_update_done(QemuConsole *con)
{
qemu_co_queue_restart_all(&con->dump_queue);
if (con) {
qemu_co_queue_restart_all(&con->dump_queue);
}
}
void graphic_hw_update(QemuConsole *con)