lib-smtp: client: Make smtp_client_transaction_destroy(NULL) a no-op.

diff --git a/src/lib-smtp/smtp-client-transaction.c b/src/lib-smtp/smtp-client-transaction.c
index 8f1a0f1118189885242b248e213eebd5cea56b5b..bd683e85277eaff1ec46af76a51ba0250783a586 100644 (file)
--- a/src/lib-smtp/smtp-client-transaction.c
+++ b/src/lib-smtp/smtp-client-transaction.c
@@ -434,6 +434,9 @@ void smtp_client_transaction_destroy(struct smtp_client_transaction **_trans)
 
        *_trans = NULL;
 
+       if (trans == NULL)
+               return;
+
        smtp_client_transaction_ref(trans);
        smtp_client_transaction_abort(trans);