fix content availability check

src/server.php

@@ -91,11 +91,14 @@ foreach ((array) scandir(__DIR__ . '/../host') as $host)
                         $config
                     );
 
+                    if ($list = $room->list())
+                    {
                         $response->setContent(
-                        $room->list()
+                            $list
                         );
 
                         return $response;
+                    }
 
                 // Dynamical requests
                 default:
@@ -111,16 +114,17 @@ foreach ((array) scandir(__DIR__ . '/../host') as $host)
                                 $config
                             );
 
+                            if ($posts = $room->posts($matches[1]))
+                            {
                                 $response->setContent(
-                                $room->posts(
-                                    $matches[1]
-                                )
+                                    $posts
                                 );
 
                                 return $response;
                             }
                         }
                     }
+            }
 
             // Set default response
             include_once __DIR__ . '/controller/error.php';