Declare missing `$lang` for default template in App->runFrontend

diff --git a/src/App.php b/src/App.php
index 5fadab1f236239866e58ca3a02b97444e33dce52..ff118ac72550792328c7305f2d393d659c868bff 100644 (file)
--- a/src/App.php
+++ b/src/App.php
@@ -1951,6 +1951,9 @@ class App
                // Theme templates expect $a as an App instance
                $a = $this;
 
+               // Used as is in view/php/default.php
+               $lang = Core\L10n::getCurrentLang();
+
                /// @TODO Looks unsafe (remote-inclusion), is maybe not but Core\Theme::getPathForFile() uses file_exists() but does not escape anything
                require_once $template;
        }