Small tweak for nagios-plugin-spamd

[Mike Pumford <mpumford%mudcovered.org.uk@localhost>]

This makes the path to the spamc executable used for the check correct.

Mike

Index: net/nagios-plugin-spamd/Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/net/nagios-plugin-spamd/Makefile,v
retrieving revision 1.16
diff -u -r1.16 Makefile
--- net/nagios-plugin-spamd/Makefile	4 Nov 2019 08:00:25 -0000	1.16
+++ net/nagios-plugin-spamd/Makefile	1 Mar 2020 15:43:11 -0000
@@ -30,7 +30,7 @@
 SUBST_STAGE.check_spamd=	post-configure
 SUBST_FILES.check_spamd=	${DISTFILES}
 SUBST_MESSAGE.check_spamd=	Fixing path to spamc.
-SUBST_SED.check_spamd=		-e 's|/usr/local/perl/bin/|${PREFIX}/${PERL5_SUB_INSTALLVENDORBIN}|1'
+SUBST_SED.check_spamd=		-e 's|/usr/local/perl/bin/|${PREFIX}/bin/|1'
 
 INSTALLATION_DIRS+=	${PLUGIN_DIR}