backend/wayland: simplify wl_keyboard.{enter,leave} processing

backend/wayland/seat.c

@@ -27,12 +27,14 @@ static void keyboard_handle_enter(void *data, struct wl_keyboard *wl_keyboard,
 		uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
 	struct wlr_keyboard *keyboard = data;
 
+	int64_t time_msec = get_current_time_msec();
+
 	uint32_t *keycode_ptr;
 	wl_array_for_each(keycode_ptr, keys) {
 		struct wlr_keyboard_key_event event = {
 			.keycode = *keycode_ptr,
 			.state = WL_KEYBOARD_KEY_STATE_PRESSED,
-			.time_msec = get_current_time_msec(),
+			.time_msec = time_msec,
 			.update_state = false,
 		};
 		wlr_keyboard_notify_key(keyboard, &event);
@@ -43,18 +45,12 @@ static void keyboard_handle_leave(void *data, struct wl_keyboard *wl_keyboard,
 		uint32_t serial, struct wl_surface *surface) {
 	struct wlr_keyboard *keyboard = data;
 
-	size_t num_keycodes = keyboard->num_keycodes;
-	uint32_t pressed[num_keycodes + 1];
-	memcpy(pressed, keyboard->keycodes,
-		num_keycodes * sizeof(uint32_t));
-
-	for (size_t i = 0; i < num_keycodes; ++i) {
-		uint32_t keycode = pressed[i];
-
+	int64_t time_msec = get_current_time_msec();
+	while (keyboard->num_keycodes > 0) {
 		struct wlr_keyboard_key_event event = {
-			.keycode = keycode,
+			.keycode = keyboard->keycodes[keyboard->num_keycodes - 1],
 			.state = WL_KEYBOARD_KEY_STATE_RELEASED,
-			.time_msec = get_current_time_msec(),
+			.time_msec = time_msec,
 			.update_state = false,
 		};
 		wlr_keyboard_notify_key(keyboard, &event);