chore: simplify if condition

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

remote.php

@@ -58,13 +58,10 @@ function handleException(Exception|Error $e): void {
 				// we shall not log on RemoteException
 				\OCP\Server::get(ITemplateManager::class)->printErrorPage($e->getMessage(), '', $e->getCode());
 			} else {
-				if ($e instanceof ServiceUnavailableException && $e->getCode() === 0) {
-					$status = 503;
-				}
 				if ($e->getCode() > 0) {
 					$status = $e->getCode();
 				} else {
-					$status = 500;
+					$status = $e instanceof ServiceUnavailableException ? 503 : 500;
 				}
 				\OCP\Server::get(LoggerInterface::class)->error($e->getMessage(), ['app' => 'remote','exception' => $e]);
 				\OCP\Server::get(ITemplateManager::class)->printExceptionErrorPage($e, $status);