Fix crash when disconnecting output

We were freeing the sway_output immediately upon disconnect which left
a dangling pointer in the output's container. It then tried to use the
pointer when the container is freed.

We don't need to store the sway_output in an output's container which is
destroying, so the fix is to set the pointer to NULL and remove the use
in container_free.

Also added an arrange when the output is disconnected for good measure.

1 files changed, 2 insertions, 0 deletions

diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 790751c3..34fefaa9 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -1271,6 +1271,8 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
         wl_list_remove(&output->destroy.link);
         output->wlr_output->data = NULL;
         free(output);
+
+        arrange_and_commit(&root_container);
 }
 
 static void handle_mode(struct wl_listener *listener, void *data) {