add needed type hints for phpunit8

This will break a lot of plugin tests, but can't be avoided

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/plugins/config/_test/Setting/AbstractSettingTest.php b/lib/plugins/config/_test/Setting/AbstractSettingTest.php
index d18f0ec17..55e53c4fe 100644
--- a/lib/plugins/config/_test/Setting/AbstractSettingTest.php
+++ b/lib/plugins/config/_test/Setting/AbstractSettingTest.php
@@ -13,7 +13,7 @@ abstract class AbstractSettingTest extends \DokuWikiTest {
      * Sets up the proper class to test based on the test's class name
      * @throws \Exception
      */
-    public function setUp() {
+    public function setUp() : void {
         parent::setUp();
         $class = get_class($this);
         $class = substr($class, strrpos($class, '\\') + 1, -4);