[Form] fix missing static closure

nicolas-grekas · nicolas-grekas · commit 347b51ab8e4b · 2023-03-28T19:29:22.000+02:00
diff --git a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
@@ -64,15 +64,15 @@ public function __construct(iterable $choices, callable $value = null)
         }
 
         if (null === $value && $this->castableToString($choices)) {
-            $value = fn ($choice) => false === $choice ? '0' : (string) $choice;
+            $value = static fn ($choice) => false === $choice ? '0' : (string) $choice;
         }
 
         if (null !== $value) {
             // If a deterministic value generator was passed, use it later
             $this->valueCallback = $value;
         } else {
             // Otherwise generate incrementing integers as values
-            $value = function () {
+            $value = static function () {
                 static $i = 0;
 
                 return $i++;
