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 19a8f83b8c1d4c8a4db653274942f7c206da6432..a236bde88e19faef6a4a57c751fde2da21e3506d 100644 (file)
--- a/templates/lxc-centos.in
+++ b/templates/lxc-centos.in
@@ -881,7 +881,7 @@ fi
 
 configure_centos_init
 
-if [ ! -z $clean ]; then
+if [ ! -z "$clean" ]; then
     clean || exit 1
     exit 0
 fi