More return type fixes (bis)

Author: nicolas-grekas

Definition.php

@@ -812,7 +812,7 @@ public function setConfigurator($configurator)
     /**
      * Gets the configurator to call after the service is fully initialized.
      *
-     * @return callable|array|null
+     * @return string|array|null
      */
     public function getConfigurator()
     {

Loader/ClosureLoader.php

@@ -36,7 +36,7 @@ public function __construct(ContainerBuilder $container, string $env = null)
      */
     public function load($resource, string $type = null)
     {
-        $resource($this->container, $this->env);
+        return $resource($this->container, $this->env);
     }
 
     /**

Loader/DirectoryLoader.php

@@ -38,6 +38,8 @@ public function load($file, string $type = null)
                 $this->import($dir, null, false, $path);
             }
         }
+
+        return null;
     }
 
     /**

Loader/FileLoader.php

@@ -63,7 +63,7 @@ public function import($resource, string $type = null, $ignoreErrors = false, st
         }
 
         try {
-            parent::import(...$args);
+            return parent::import(...$args);
         } catch (LoaderLoadException $e) {
             if (!$ignoreNotFound || !($prev = $e->getPrevious()) instanceof FileLocatorFileNotFoundException) {
                 throw $e;
@@ -79,6 +79,8 @@ public function import($resource, string $type = null, $ignoreErrors = false, st
                 throw $e;
             }
         }
+
+        return null;
     }
 
     /**

Loader/GlobFileLoader.php

@@ -28,6 +28,8 @@ public function load($resource, string $type = null)
         }
 
         $this->container->addResource($globResource);
+
+        return null;
     }
 
     /**

Loader/IniFileLoader.php

@@ -50,6 +50,8 @@ public function load($resource, string $type = null)
                 $this->container->setParameter($key, $this->phpize($value));
             }
         }
+
+        return null;
     }
 
     /**

Loader/PhpFileLoader.php

@@ -70,6 +70,8 @@ public function load($resource, string $type = null)
             $this->instanceof = [];
             $this->registerAliasesForSinglyImplementedInterfaces();
         }
+
+        return null;
     }
 
     /**

Loader/XmlFileLoader.php

@@ -66,6 +66,8 @@ public function load($resource, string $type = null)
                 }
             }
         }
+
+        return null;
     }
 
     private function loadXml(\DOMDocument $xml, string $path, \DOMNode $root = null): void

Loader/YamlFileLoader.php

@@ -126,7 +126,7 @@ public function load($resource, string $type = null)
 
         // empty file
         if (null === $content) {
-            return;
+            return null;
         }
 
         $this->loadContent($content, $path);
@@ -145,6 +145,8 @@ public function load($resource, string $type = null)
                 $this->env = $env;
             }
         }
+
+        return null;
     }
 
     private function loadContent(array $content, string $path)