context processor: adapt to use existing logout URL for w.c.s. (#62723)

hobo/context_processors.py

@@ -197,13 +197,15 @@ def user_urls(request):
 
         pub = get_publisher()
         template_vars = (pub and pub.get_substitution_variables()) or {}
+        logout_url = '/logout?'
     else:
         template_vars = getattr(settings, 'TEMPLATE_VARS', {})
+        logout_url = '/logout/?'
     full_path = request.get_full_path()
     query_string = urlencode({'next': full_path})
     context = {
         'login_url': '/login/?' + query_string,
-        'logout_url': '/logout/?' + urlencode({'next': '/'}),
+        'logout_url': logout_url + urlencode({'next': '/'}),
     }
     absolute_uri = request.build_absolute_uri()
     if 'idp_account_url' in template_vars: