core: 重命名 event_t 联合体成员 data 为 as

src/backend/x11/event.c

@@ -68,7 +68,7 @@ static bool handle_map_request(backend_t *backend, event_t *event,
   p_clear(event, 1);
   event->type = ZDWM_EVENT_WINDOW_MAP_REQUEST;
 
-  window_map_request_event_t *ev = &event->data.window_map_request;
+  window_map_request_event_t *ev = &event->as.window_map_request;
   ev->window = (window_id_t)window;
   ev->transient_for = window_get_transient_for(backend, window);
   ev->geometry_mode = ZDWM_GEOMETRY_NORMAL;

src/core/event.h

@@ -176,5 +176,5 @@ typedef struct event_t {
     window_activate_request_event_t window_activate_request;
     window_state_request_event_t window_state_request;
     configure_request_event_t configure_request;
-  } data;
+  } as;
 } event_t;