slurm-wlm: Replace erroneous = with +=

[Jason Bacon <bacon%NetBSD.org@localhost>]

Module Name:	pkgsrc-wip
Committed By:	Jason Bacon <bacon%NetBSD.org@localhost>
Pushed By:	outpaddling
Date:		Fri Jan 31 10:32:28 2020 -0600
Changeset:	fb386ef798936c24066fbcc3e221fb8cbc95361d

Modified Files:
	slurm-wlm/Makefile

Log Message:
slurm-wlm: Replace erroneous = with +=

To see a diff of this commit:
https://wip.pkgsrc.org/cgi-bin/gitweb.cgi?p=pkgsrc-wip.git;a=commitdiff;h=fb386ef798936c24066fbcc3e221fb8cbc95361d

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

diffstat:
 slurm-wlm/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diffs:
diff --git a/slurm-wlm/Makefile b/slurm-wlm/Makefile
index ff84d19ee0..9a5dc37363 100644
--- a/slurm-wlm/Makefile
+++ b/slurm-wlm/Makefile
@@ -64,7 +64,7 @@ SUBST_FILES.gtk=	configure
 SUBST_CLASSES+=		prefix
 SUBST_STAGE.prefix=	pre-configure
 SUBST_SED.prefix=	-e 's|/usr/local|${PREFIX}|g'
-SUBST_SED.prefix=	-e 's|/opt/local /sw||g'
+SUBST_SED.prefix+=	-e 's|/opt/local /sw||g'
 SUBST_FILES.prefix=	configure
 
 SUBST_CLASSES+=		make-ex