mail/emailrelay: Fix build with llvm16

- Pet portclippy

Approved by:	portmgr (blanket)
Sponsored by:	The FreeBSD Foundation

mail/emailrelay/Makefile

@@ -13,25 +13,27 @@ LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		autoreconf pkgconfig
-GNU_CONFIGURE=	yes
-CONFIGURE_ENV=	e_spooldir=${PREFIX}/var/spool/emailrelay
-CONFIGURE_ARGS=	--without-pam
+USE_CXXSTD=	c++14
 USE_RC_SUBR=	${PORTNAME}
 
+GNU_CONFIGURE=	yes
+CONFIGURE_ARGS=	--without-pam
+CONFIGURE_ENV=	e_spooldir=${PREFIX}/var/spool/emailrelay
+
 OPTIONS_DEFINE=		DOCS DOXYGEN OPENSSL IPV6
 OPTIONS_DEFAULT=	OPENSSL
 OPTIONS_SUB=		yes
 
-DOXYGEN_CONFIGURE_WITH=	doxygen
 DOXYGEN_BUILD_DEPENDS=	doxygen:devel/doxygen
-
-OPENSSL_CONFIGURE_WITH=	openssl
-OPENSSL_USES=		ssl
-OPENSSL_LDFLAGS=	-L${OPENSSLLIB}
-OPENSSL_CPPFLAGS=	-I${OPENSSLINC}
+DOXYGEN_CONFIGURE_WITH=	doxygen
 
 IPV6_CONFIGURE_ENABLE=	ipv6
 
+OPENSSL_USES=		ssl
+OPENSSL_CONFIGURE_WITH=	openssl
+OPENSSL_CPPFLAGS=	-I${OPENSSLINC}
+OPENSSL_LDFLAGS=	-L${OPENSSLLIB}
+
 post-install:
 	${MV} ${STAGEDIR}${PREFIX}/etc/emailrelay.auth.template \
 		${STAGEDIR}${PREFIX}/etc/emailrelay.auth.sample