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
--- a/clients/window.c
+++ b/clients/window.c
@@ -1176,6 +1176,10 @@
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,