crontab.d/setup.sh: use single quotes

diff --git a/crontab.d/setup.sh b/crontab.d/setup.sh
index 2b174c165a5437040044ff544b9034620e336dbd..33e88c38095257522b51059703c56cd4e135dd51 100755 (executable)
--- a/crontab.d/setup.sh
+++ b/crontab.d/setup.sh
@@ -24,7 +24,7 @@
 set -e
 
 
-HEADER_WARNING="# WARNING! DO NOT EDIT THIS FILE! #"
+HEADER_WARNING='# WARNING! DO NOT EDIT THIS FILE! #'
 
 # Don't overwrite existing crontab entries. Not race condition free but that
 # can't be helped.