Add missing destroy events on automatically destroyed objects

include/wlr/types/wlr_drm_lease_v1.h

@@ -20,6 +20,8 @@ struct wlr_drm_lease_v1_manager {
 	struct wl_display *display;
 
 	struct {
+		struct wl_signal destroy;
+
 		/**
 		 * Upon receiving this signal, call
 		 * wlr_drm_lease_device_v1_grant_lease_request() to grant a lease of the

include/wlr/types/wlr_pointer_constraints_v1.h

@@ -78,6 +78,8 @@ struct wlr_pointer_constraints_v1 {
 	struct wl_list constraints; // wlr_pointer_constraint_v1.link
 
 	struct {
+		struct wl_signal destroy;
+
 		/**
 		 * Called when a new pointer constraint is created.
 		 *

include/wlr/types/wlr_transient_seat_v1.h

@@ -26,6 +26,8 @@ struct wlr_transient_seat_manager_v1 {
 	struct wl_global *global;
 
 	struct {
+		struct wl_signal destroy;
+
 		/**
 		 * Upon receiving this signal, call
 		 * wlr_transient_seat_v1_ready() to pass a newly created seat

include/wlr/types/wlr_xdg_system_bell_v1.h

@@ -15,6 +15,7 @@ struct wlr_xdg_system_bell_v1 {
 	struct wl_global *global;
 
 	struct {
+		struct wl_signal destroy;
 		struct wl_signal ring; // struct wlr_xdg_system_bell_v1_ring_event
 	} events;
 

include/wlr/xwayland/xwayland.h

@@ -51,6 +51,7 @@ struct wlr_xwayland {
 	struct wlr_seat *seat;
 
 	struct {
+		struct wl_signal destroy;
 		struct wl_signal ready;
 		struct wl_signal new_surface; // struct wlr_xwayland_surface
 		struct wl_signal remove_startup_info; // struct wlr_xwayland_remove_startup_info_event