libesmtp bindings: Fix sentinel in smtp_set_header

diff --git a/vapi/libesmtp.vapi b/vapi/libesmtp.vapi
index bec4d5a0a56040e8bb3cc40f3a53178327025754..0942d499045742d9e3adcae7eee4482dfb05e58a 100644 (file)
--- a/vapi/libesmtp.vapi
+++ b/vapi/libesmtp.vapi
@@ -74,7 +74,7 @@ namespace Smtp {
                public Smtp.Recipient add_recipient (string mailbox);
                [CCode (cname="smtp_enumerate_recipients")]
                public int enumerate_recipients (EnumerateRecipientCb cb);
-               [CCode (cname="smtp_set_header")]
+               [CCode (cname="smtp_set_header", sentinel="")]
                public int set_header (string header, ...);
                [CCode (cname="smtp_set_header_option")]
                public int set_header_option (string header, Smtp.HeaderOption option, ...);