g_usb_device_control_transfer_async: Check for unopened device
g_usb_device_control_transfer_async: Check for unopened device

hughsie/libgusb,robert-ancell/libgusb,hughsie/libgusb,nacho/libgusb,nacho/libgusb,hughsie/libgusb,robert-ancell/libgusb