Use the correct path to the sendmail(8) mail enqueuer.

This makes the GPG Web Key Service work correctly; from Aisha Tammy.

security/gnupg2/Makefile

@@ -1,10 +1,10 @@
-# $OpenBSD: Makefile,v 1.66 2019/07/12 21:15:35 sthen Exp $
+# $OpenBSD: Makefile,v 1.67 2020/04/27 19:22:54 naddy Exp $
 
 COMMENT =	GNU privacy guard - a free PGP replacement
 
 DISTNAME =	gnupg-2.2.12
 CATEGORIES = 	security
-REVISION =	0
+REVISION =	1
 
 # don't mix up dependencies with gnupg1
 PKGSPEC =	gnupg->=2

security/gnupg2/patches/patch-tools_send-mail_c

@@ -0,0 +1,14 @@
+$OpenBSD: patch-tools_send-mail_c,v 1.1 2020/04/27 19:22:54 naddy Exp $
+
+Index: tools/send-mail.c
+--- tools/send-mail.c.orig
++++ tools/send-mail.c
+@@ -33,7 +33,7 @@ static gpg_error_t
+ run_sendmail (estream_t data)
+ {
+   gpg_error_t err;
+-  const char pgmname[] = "/usr/lib/sendmail";
++  const char pgmname[] = "/usr/sbin/sendmail";
+   const char *argv[3];
+ 
+   argv[0] = "-oi";