build: silence warning about ignored variable

The warning was:

	config.status: WARNING: 'extensions/ipset/GNUmakefile.in'
	seems to ignore the --datarootdir setting

diff --git a/extensions/ipset/GNUmakefile.in b/extensions/ipset/GNUmakefile.in
index d473a3a64203cd285f2f44ac25eadb6bca2528dd..a5d8a39ec92f52da1a2e222f003e5f32e823f6d2 100644 (file)
--- a/extensions/ipset/GNUmakefile.in
+++ b/extensions/ipset/GNUmakefile.in
@@ -2,6 +2,7 @@
 
 top_srcdir      := @top_srcdir@
 srcdir          := @srcdir@
+datarootdir     := @datarootdir@
 abstop_srcdir   := $(shell readlink -e ${top_srcdir})
 abssrcdir       := $(shell readlink -e ${srcdir})