Ensure vb is initialised

diff --git a/src/modules/rlm_smtp/rlm_smtp.c b/src/modules/rlm_smtp/rlm_smtp.c
index 5550e7e1b9543af86b87cf984eda3f1b5fa9fdea..6cfd79a6bc24f0a3dcf105023be31afad24689c2 100644 (file)
--- a/src/modules/rlm_smtp/rlm_smtp.c
+++ b/src/modules/rlm_smtp/rlm_smtp.c
@@ -877,7 +877,7 @@ static xlat_action_t smtp_send_xlat(UNUSED TALLOC_CTX *ctx, UNUSED fr_dcursor_t
        rlm_smtp_xlat_env_t     *call_env = talloc_get_type_abort(xctx->env_data, rlm_smtp_xlat_env_t);
        fr_curl_io_request_t    *randle = NULL;
        fr_mail_ctx_t           *mail_ctx;
-       fr_value_box_t          *vb;
+       fr_value_box_t          *vb = NULL;
        char const              *sender;
        char                    *header_string;
        curl_mimepart           *part;