From c5566d782db2152cb2c9b11325c11eb14f3a645d Mon Sep 17 00:00:00 2001
From: Chris Penny <chris.penny@gmail.com>
Date: Wed, 6 Jul 2022 12:06:21 +1200
Subject: [PATCH] PHP 8.1: Don't pass null to addslashes function (#141)

---
 src/Criterion.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Criterion.php b/src/Criterion.php
index c3309e6..c898918 100644
--- a/src/Criterion.php
+++ b/src/Criterion.php
@@ -90,7 +90,7 @@ public function toScript()
             "this.findHolder('%s').evaluate%s('%s')",
             $this->master,
             $this->operator,
-            addslashes($this->value)
+            addslashes($this->value ?? '')
         );
     }
 }