permission: remove useless conditional

Deleting a null pointer has no effect. The check is not needed.

Signed-off-by: Juan José Arboleda <soyjuanarbol@gmail.com>
PR-URL: #58514
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>

Author: juanarbol

src/permission/fs_permission.cc

@@ -45,9 +45,7 @@ void FreeRecursivelyNode(
     }
   }
 
-  if (node->wildcard_child != nullptr) {
-    delete node->wildcard_child;
-  }
+  delete node->wildcard_child;
   delete node;
 }