window: Avoid setting an invalid surface for the pointer

If we failed to load the pointer image to the surface then do not create a
buffer from a NULL surface and do not attach that to the device.

diff --git a/clients/window.c b/clients/window.c
index e192ead..d75a0ac 100644 (file)
--- a/clients/window.c
+++ b/clients/window.c
@@ -1176,6 +1176,10 @@ set_pointer_image(struct input *input, uint32_t time, int pointer)
 
        input->current_pointer_image = pointer;
        surface = display->pointer_surfaces[pointer];
+
+       if (!surface)
+               return;
+
        buffer = display_get_buffer_for_surface(display, surface);
        wl_input_device_attach(input->input_device, time, buffer,
                               pointer_images[pointer].hotspot_x,