compositor: Don't send wl_surface.enter/leave if we didn't find a resource

diff --git a/src/compositor.c b/src/compositor.c
index 5420639..c06bc5a 100644 (file)
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1342,6 +1342,8 @@ weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask)
                        resource =
                                find_resource_for_client(&output->resource_list,
                                                         client);
+               if (resource == NULL)
+                       continue;
                if (1 << output->id & entered)
                        wl_surface_send_enter(&es->surface.resource, resource);
                if (1 << output->id & left)