Fix redundant type casts

Author: fancyweb

Loader/XmlFileLoader.php

@@ -197,7 +197,7 @@ private function parseDefinition(\DOMElement $service, string $file, array $defa
         if ($alias = $service->getAttribute('alias')) {
             $this->validateAlias($service, $file);
 
-            $this->container->setAlias((string) $service->getAttribute('id'), $alias = new Alias($alias));
+            $this->container->setAlias($service->getAttribute('id'), $alias = new Alias($alias));
             if ($publicAttr = $service->getAttribute('public')) {
                 $alias->setPublic(XmlUtils::phpize($publicAttr));
             } elseif (isset($defaults['public'])) {
@@ -345,7 +345,7 @@ private function parseDefinition(\DOMElement $service, string $file, array $defa
             }
 
             if ('' === $tag->getAttribute('name')) {
-                throw new InvalidArgumentException(sprintf('The tag name for service "%s" in "%s" must be a non-empty string.', (string) $service->getAttribute('id'), $file));
+                throw new InvalidArgumentException(sprintf('The tag name for service "%s" in "%s" must be a non-empty string.', $service->getAttribute('id'), $file));
             }
 
             $definition->addTag($tag->getAttribute('name'), $parameters);
@@ -374,7 +374,7 @@ private function parseDefinition(\DOMElement $service, string $file, array $defa
             } elseif ('null' === $decorationOnInvalid) {
                 $invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
             } else {
-                throw new InvalidArgumentException(sprintf('Invalid value "%s" for attribute "decoration-on-invalid" on service "%s". Did you mean "exception", "ignore" or "null" in "%s"?', $decorationOnInvalid, (string) $service->getAttribute('id'), $file));
+                throw new InvalidArgumentException(sprintf('Invalid value "%s" for attribute "decoration-on-invalid" on service "%s". Did you mean "exception", "ignore" or "null" in "%s"?', $decorationOnInvalid, $service->getAttribute('id'), $file));
             }
 
             $renameId = $service->hasAttribute('decoration-inner-name') ? $service->getAttribute('decoration-inner-name') : null;