zero out nss->handle after it has been freed to make sure we cannot free it twice

diff --git a/plugins/sudoers/sssd.c b/plugins/sudoers/sssd.c
index c6725cfa8bd41e46ecb1b4499f67fcaa4cfd2563..195748224cbb7a36dcc52b6ee455bca7472fab0d 100644 (file)
--- a/plugins/sudoers/sssd.c
+++ b/plugins/sudoers/sssd.c
@@ -481,6 +481,7 @@ sudo_sss_close(struct sudo_nss *nss)
        handle = nss->handle;
        sudo_dso_unload(handle->ssslib);
        free(nss->handle);
+       nss->handle = NULL;
     }
     debug_return_int(0);
 }