security/sudo: Fix build without sendmail

PR:		251582
Reported by:	Alexander Kuznetsov <alex@kuznetcoff.ru>
Obtained from:	https://www.sudo.ws/repos/sudo/raw-rev/41db1aad85bb
Sponsored by:	Rubicon Communications, LLC (Netgate)

security/sudo/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	sudo
 PORTVERSION=	1.9.4
+PORTREVISION=	1
 CATEGORIES=	security
 MASTER_SITES=	SUDO
 

security/sudo/files/patch-fix_build_without_sendmail

@@ -0,0 +1,45 @@
+
+# HG changeset patch
+# User Todd C. Miller <Todd.Miller@sudo.ws>
+# Date 1606767492 25200
+# Node ID 41db1aad85bbce444b511bcb28b9628a0a22fcd9
+# Parent  96a5cfe3c66b6ee84d7f7b6fb26d932f45a44b76
+Fix build when configured using --without-sendmail
+Bug #947
+
+diff -r 96a5cfe3c66b -r 41db1aad85bb lib/eventlog/eventlog.c
+--- lib/eventlog/eventlog.c	Sun Nov 29 15:11:34 2020 -0700
++++ lib/eventlog/eventlog.c	Mon Nov 30 13:18:12 2020 -0700
+@@ -78,7 +78,7 @@
+ static FILE *eventlog_stub_open_log(int type, const char *logfile);
+ static void eventlog_stub_close_log(int type, FILE *fp);
+ 
+-/* Eventlog config settings */
++/* Eventlog config settings (default values). */
+ static struct eventlog_config evl_conf = {
+     EVLOG_NONE,			/* type */
+     EVLOG_SUDO,			/* format */
+@@ -91,7 +91,11 @@
+     false,			/* omit_hostname */
+     _PATH_SUDO_LOGFILE,		/* logpath */
+     "%h %e %T",			/* time_fmt */
++#ifdef _PATH_SUDO_SENDMAIL
+     _PATH_SUDO_SENDMAIL,	/* mailerpath */
++#else
++    NULL,			/* mailerpath (disabled) */
++#endif
+     "-t",			/* mailerflags */
+     NULL,			/* mailfrom */
+     MAILTO,			/* mailto */
+@@ -1436,8 +1440,10 @@
+ 	evl_conf.logpath = _PATH_SUDO_LOGFILE;
+     if (evl_conf.time_fmt == NULL)
+ 	evl_conf.time_fmt = "%h %e %T";
++#ifdef _PATH_SUDO_SENDMAIL
+     if (evl_conf.mailerpath == NULL)
+ 	evl_conf.mailerpath = _PATH_SUDO_SENDMAIL;
++#endif
+     if (evl_conf.mailerflags == NULL)
+ 	evl_conf.mailerflags = "-t";
+     if (evl_conf.mailto == NULL)
+