Merge pull request #12719 from bancer/patch-5

Fix invalid value of htmlspecialchars argument

src/Core/functions.php

@@ -69,6 +69,7 @@ if (!function_exists('h')) {
                 'Use the 3rd argument instead.'
             );
             $charset = $double;
+            $double = true;
         }
 
         return htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE, $charset ?: $defaultCharset, $double);