Fix crash in ipc_json_describe_view

I didn't expect a function called ipc_json_describe_view to be passed a
container which wasn't a view :\

1 files changed, 4 insertions, 2 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index f9182291..f8de51ed 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -198,8 +198,10 @@ static void ipc_json_describe_view(struct sway_container *c, json_object *object
                         json_object_new_string(ipc_json_layout_description(c->layout)));
         }
 
-        json_object_object_add(object, "urgent",
-                        json_object_new_boolean(view_is_urgent(c->sway_view)));
+        if (c->type == C_VIEW) {
+                json_object_object_add(object, "urgent",
+                                json_object_new_boolean(view_is_urgent(c->sway_view)));
+        }
 }
 
 static void focus_inactive_children_iterator(struct sway_container *c, void *data) {