From c43ce4921217a8416de46f04a023e4469fd1a8a1 Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Thu, 1 Aug 2019 12:16:23 +0300
Subject: [PATCH] Make sure $label_markup is always defined. (#16189)

Fixes #16188.
---
 packages/block-library/src/search/index.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/block-library/src/search/index.php b/packages/block-library/src/search/index.php
index 7952a9085c51f..f76882f8b41d5 100644
--- a/packages/block-library/src/search/index.php
+++ b/packages/block-library/src/search/index.php
@@ -15,7 +15,8 @@
 function render_block_core_search( $attributes ) {
 	static $instance_id = 0;
 
-	$input_id = 'wp-block-search__input-' . ++$instance_id;
+	$input_id     = 'wp-block-search__input-' . ++$instance_id;
+	$label_markup = '';
 
 	if ( ! empty( $attributes['label'] ) ) {
 		$label_markup = sprintf(