ipc: handle NULL cases for node_get_output

1 files changed, 4 insertions, 1 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 30c0a8e1..52278be2 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -316,9 +316,12 @@ static void focus_inactive_children_iterator(struct sway_node *node,
         struct focus_inactive_data *data = _data;
         json_object *focus = data->object;
         if (data->node == &root->node) {
-                int len = json_object_array_length(focus);
                 struct sway_output *output = node_get_output(node);
+                if (output == NULL) {
+                        return;
+                }
                 size_t id = output->node.id;
+                int len = json_object_array_length(focus);
                 for (int i = 0; i < len; ++i) {
                         if ((size_t) json_object_get_int(json_object_array_get_idx(focus, i)) == id) {
                                 return;