Fix lint

qutebrowser/browser/qutescheme.py

@@ -435,7 +435,7 @@ def qute_help(url):
 
 
 @add_handler('backend-warning')
-def qute_backend_warning(url):
+def qute_backend_warning(_url):
     """Handler for qute://backend-warning."""
     html = jinja.render('backend-warning.html',
                         distribution=version.distribution(),

scripts/dev/run_vulture.py

@@ -74,6 +74,7 @@ def whitelist_generator():
 
     ## qute://... handlers
     for name in qutescheme._HANDLERS:  # pylint: disable=protected-access
+        name = name.replace('-', '_')
         yield 'qutebrowser.browser.qutescheme.qute_' + name
 
     # Other false-positives