dns/blocky: Add buildinfo symbols to -ldflags

 - add buildinfo symbols to -ldflags so they do not show up as
   "undefined"
 - bump PORTREVISION

PR:		265563

dns/blocky/Makefile

@@ -1,7 +1,7 @@
 PORTNAME=	blocky
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.19
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	dns
 MASTER_SITES=	https://raw.githubusercontent.com/${GH_ACCOUNT}/${GH_PROJECT}/${DISTVERSIONFULL}/:gomod
 DISTFILES=	go.mod:gomod
@@ -19,6 +19,9 @@ USE_RC_SUBR=	blocky
 
 GO_MODULE=	github.com/${GH_ACCOUNT}/${GH_PROJECT}
 GO_TARGET=	main.go:${PREFIX}/sbin/${PORTNAME}
+GO_BUILDFLAGS=	-ldflags "-w -s \
+		-X github.com/0xERR0R/blocky/util.Version=${DISTVERSION} \
+		-X github.com/0xERR0R/blocky/util.BuildTime=`date '+%Y%m%d-%H%M%S'`"
 
 SUB_FILES=	pkg-message