Remove some implicit bool type juggling

Author: Girgias

DependencyInjection/FormPass.php

@@ -54,7 +54,7 @@ private function processFormTypes(ContainerBuilder $container): Reference
             // Add form type service to the service locator
             $serviceDefinition = $container->getDefinition($serviceId);
             $servicesMap[$formType = $serviceDefinition->getClass()] = new Reference($serviceId);
-            $namespaces[substr($formType, 0, strrpos($formType, '\\'))] = true;
+            $namespaces[substr($formType, 0, strrpos($formType, '\\') ?: \strlen($formType))] = true;
 
             if (isset($tag[0]['csrf_token_id'])) {
                 $csrfTokenIds[$formType] = $tag[0]['csrf_token_id'];

Tests/ButtonBuilderTest.php

@@ -50,7 +50,6 @@ public static function getInvalidNames()
     {
         return [
             [''],
-            [false],
             [null],
         ];
     }