sysutils/xxd: Install man page

While here per portclippy and portfmt.

Intentionally not bumping PORTREVISION, since this port version
depends on the vim port..

PR:		275672
Approved by:	Gianmarco Giovannelli <gmarco@giovannelli.it> (maintainer)

sysutils/xxd/Makefile

@@ -12,17 +12,22 @@ LICENSE_NAME=	VIM License
 LICENSE_FILE=	${WRKSRC}/../../runtime/doc/uganda.txt
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
-DISTINFO_FILE=	${VIM_PORT}/distinfo
+USE_GITHUB=	yes
+GH_ACCOUNT=	vim
+GH_PROJECT=	vim
+
 ALL_TARGET=	${PORTNAME}
+EXTRACT_AFTER_ARGS=	--include='*/src/xxd*' \
+			--include='*/runtime/doc/uganda.txt' \
+			--include='*/runtime/doc/xxd.1'
 PORTSCOUT=	ignore:1
-EXTRACT_AFTER_ARGS=	--include='*/src/xxd*' --include='*/runtime/doc/uganda.txt'
-WRKSRC_SUBDIR=	src/xxd
 
-PLIST_FILES=	bin/xxd
+WRKSRC_SUBDIR=	src/xxd
+WRKDOCS=	${WRKSRC}/../../runtime/doc
 
-USE_GITHUB=	yes
-GH_ACCOUNT=	vim
-GH_PROJECT=	vim
+DISTINFO_FILE=	${VIM_PORT}/distinfo
+PLIST_FILES=	bin/xxd \
+		man/man1/xxd.1.gz
 
 .include <bsd.port.pre.mk>
 
@@ -31,5 +36,6 @@ VIM_DISTVERSION!=	${BSDMAKE} -f ${VIM_PORT}/Makefile -V DISTVERSION
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/xxd ${STAGEDIR}${PREFIX}/bin
+	${INSTALL_MAN} ${WRKDOCS}/xxd.1 ${STAGEDIR}${MAN1PREFIX}/man/man1
 
 .include <bsd.port.post.mk>