25-locales: make sure the localepurge package exists, not only the binary.

localepurge might be a left-over of a removed package (brrr)
and might no longer exist as a package, therefore make the
check more reliable.

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/25-locales b/etc/grml/fai/config/scripts/GRMLBASE/25-locales
index 9987614..fc5fb3d 100755 (executable)
--- a/etc/grml/fai/config/scripts/GRMLBASE/25-locales
+++ b/etc/grml/fai/config/scripts/GRMLBASE/25-locales
@@ -38,7 +38,7 @@ fi
 # make sure:
 # localepurge     localepurge/nopurge     multiselect ....
 # is set so localepurge works as expected
-if [ -x $target/usr/sbin/localepurge ] ; then
+if $ROOTCMD dpkg --list localepurge >/dev/null 2>&1 ; then
    $ROOTCMD dpkg-reconfigure -f noninteractive localepurge
 fi