Fix malformed line (PyChecker)
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index bdd6c31..dac40f6 100644
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -74,7 +74,7 @@
         controller.basename = os.path.basename(browser)
         register(browser, None, controller)
         return [None, controller]
-    ret
+    return [None, None]
 
 
 def _iscommand(cmd):