libinput: Don't process touch events for devices without a valid output

That would be the case of a touch screen mapped to an output that was
unplugged.

diff --git a/src/libinput-device.c b/src/libinput-device.c
index 0ca6c4b..a67c119 100644 (file)
--- a/src/libinput-device.c
+++ b/src/libinput-device.c
@@ -147,6 +147,9 @@ handle_touch_with_coords(struct libinput_device *libinput_device,
        uint32_t time;
        int32_t slot;
 
+       if (!device->output)
+               return;
+
        time = libinput_event_touch_get_time(touch_event);
        slot = libinput_event_touch_get_seat_slot(touch_event);