api_schema: allow generic api handler functions

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/api2.rs

@@ -35,7 +35,7 @@ pub fn router() -> Router {
 
     let route = Router::new()
         .get(ApiMethod::new(
-            |_,_,_| Ok(json!([
+            || Ok(json!([
                 {"subdir": "access"},
                 {"subdir": "admin"},
                 {"subdir": "config"},