virtual_keyboard: Accept keycode 0

types/wlr_virtual_keyboard_v1.c

@@ -75,9 +75,6 @@ context_fail:
 static void virtual_keyboard_key(struct wl_client *client,
 		struct wl_resource *resource, uint32_t time, uint32_t key,
 		uint32_t state) {
-	if (key == 0) {
-		return;
-	}
 	struct wlr_virtual_keyboard_v1 *keyboard =
 		virtual_keyboard_from_resource(resource);
 	if (!keyboard->has_keymap) {

util/array.c

@@ -24,7 +24,6 @@ bool set_add(uint32_t values[], size_t *len, size_t cap, uint32_t target) {
 	if (*len == cap) {
 		return false;
 	}
-	assert(target > 0);
 	for (uint32_t i = 0; i < *len; ++i) {
 		if (values[i] == target) {
 			return false;