lxc-centos: protect possibly unset variable with quotes for -z check

Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

diff --git a/templates/lxc-centos.in b/templates/lxc-centos.in
index 6610a1b9e8f368cd6f49b69f4e352d88cd780380..c7d2b892a0697fae347b9c2250ec09277b09353c 100644 (file)
--- a/templates/lxc-centos.in
+++ b/templates/lxc-centos.in
@@ -887,7 +887,7 @@ fi
 
 configure_centos_init
 
-if [ ! -z $clean ]; then
+if [ ! -z "$clean" ]; then
     clean || exit 1
     exit 0
 fi