commit 43613b9ec24600ac3faa951256f3bb6b2ee4e261
from: Kirill A. Korinsky <kirill@korins.ky>
date: Fri Jan 31 23:34:01 2025 UTC

Do not treat ar_h_errno == NO_DATA as error

OpenBSD's asr returns ar_h_errno == NO_DATA when it had a fallback from
UDP to TCP, so I should tolerate it as well.

commit - a3ad827f603b0c6ef0845a37c8007221ab4d4142
commit + 43613b9ec24600ac3faa951256f3bb6b2ee4e261
blob - e887fabc148308e67ba82834ede9ac962421c10a
blob + 9bf3a4b3cdc1fbc115cdffe68a5a06f64d7d2c3e
--- main.c
+++ main.c
@@ -1127,7 +1127,7 @@ dkim_rr_resolve(struct asr_result *ar, void *arg)
 		    hstrerror(ar->ar_h_errno));
 		goto verify;
 	}
-	if (ar->ar_h_errno != NETDB_SUCCESS) {
+	if (ar->ar_h_errno == HOST_NOT_FOUND) {
 		dkim_signature_state(sig, DKIM_PERMERROR,
 		    hstrerror(ar->ar_h_errno));
 		goto verify;