fix: coding standards

Prevent CI failures like https://github.com/nextcloud/social/runs/7711238464?check_suite_focus=true

Signed-off-by: Max <max@nextcloud.com>

lib/Controller/LocalController.php

@@ -112,9 +112,13 @@ class LocalController extends Controller {
 	 * @NoAdminRequired
 	 */
 	public function uploadAttachement(): DataResponse {
+		try {
+			throw new \BadMethodCallException('uploadAttachment is not implemented yet');
+		} catch (Exception $e) {
+			return $this->fail($e);
+		}
 	}
 
-
 	/**
 	 * Create a new post.
 	 *

lib/Controller/MediaApiController.php

@@ -8,6 +8,7 @@ declare(strict_types=1);
 namespace OCA\Social\Controller;
 
 use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\DataResponse;
 use OCP\Files\IMimeTypeDetector;
 
 class MediaApiController extends Controller {
@@ -32,7 +33,7 @@ class MediaApiController extends Controller {
 	 */
 	public function uploadMedia(): DataResponse {
 		// TODO
-		return DataResponse([
+		return new DataResponse([
 			'id' => 1,
 			'url' => '',
 			'preview_url' => '',