minor fix

ot_templating/Classes/ViewHelpers/Template/GetPreferenceViewHelper.php

@@ -54,7 +54,7 @@ class GetPreferenceViewHelper extends OtAbstractViewHelper
         $website = $this->otWebsiteRepository->getCurrentWebsiteFromFEGlobals();
         $preferences = $this->templateRepository->getTemplatePreferences($website);
 
-        $key = $this->arguments['key'] ?? null;
-        return $preferences[$key];
+        $key = $this->arguments['key'];
+        return $preferences[$key] ?? null;
     }
 }