patch tsoome-feedback

@@ -5345,11 +5345,10 @@
 
         error = 0;
 
 cleanup0:
         nvlist_free(perm_nvl);
-        if (update_perm_nvl != NULL)
                 nvlist_free(update_perm_nvl);
 cleanup1:
         fs_perm_set_fini(&fs_perm_set);
 cleanup2:
         zfs_close(zhp);