Add missing __constrcut return docblock.

Author: lucasmichot

src/Exception/InternalHttpException.php

@@ -16,6 +16,8 @@ class InternalHttpException extends HttpException
      * @param \Exception                                 $previous
      * @param array                                      $headers
      * @param int                                        $code
+     *
+     * @return void
      */
     public function __construct(Response $response, $message = null, Exception $previous = null, array $headers = [], $code = 0)
     {

src/Http/Middleware/Auth.php

@@ -27,6 +27,8 @@ class Auth
      *
      * @param \Dingo\Api\Routing\Router $router
      * @param \Dingo\Api\Auth\Auth      $auth
+     *
+     * @return void
      */
     public function __construct(Router $router, Authentication $auth)
     {

src/Http/Parser/Accept.php

@@ -43,6 +43,8 @@ class Accept implements Parser
      * @param string $subtype
      * @param string $version
      * @param string $format
+     *
+     * @return void
      */
     public function __construct($standardsTree, $subtype, $version, $format)
     {

src/Routing/Route.php

@@ -132,6 +132,8 @@ class Route
      * @param \Illuminate\Container\Container     $container
      * @param \Illuminate\Http\Request            $request
      * @param array|\Illuminate\Routing\Route     $route
+     *
+     * @return void
      */
     public function __construct(Adapter $adapter, Container $container, Request $request, $route)
     {