mail/nbsmtp: Fix build with clang15

mail/nbsmtp/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	nbsmtp
 PORTVERSION=	1.00
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	mail
 MASTER_SITES=	LOCAL/ehaupt
 
@@ -18,19 +18,15 @@ LDFLAGS+=	-L${OPENSSLLIB}
 
 PLIST_FILES=	bin/nbsmtp man/man5/nbsmtprc.5.gz man/man8/nbsmtp.8.gz
 
-.include <bsd.port.pre.mk>
-
-.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400079
-USE_GCC=	yes
-.endif
-
 post-patch:
 	${REINPLACE_CMD} -e 's@\(-o nbsmtp\)@$$(LDFLAGS) \1@g'	\
 		${WRKSRC}/Makefile.in
+	${REINPLACE_CMD} -E '/NULL/s,\(char\) ?,,' \
+		${WRKSRC}/main.c ${WRKSRC}/original.c
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_MAN} ${WRKSRC}/nbsmtprc.5 ${STAGEDIR}${MANPREFIX}/man/man5
 	${INSTALL_MAN} ${WRKSRC}/nbsmtp.8 ${STAGEDIR}${MANPREFIX}/man/man8
 
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>