fix multiple cron tab service runner entries

emoncmsupdate

@@ -134,7 +134,7 @@ echo "Checking cron tab for service runner entry..."
 # Add root crontab entry to run wifi check script ever 5min
 crontab -l > mycron #write out current root crontab
 # Check crontab entry does not already exist, if not add new entry
-if ! grep -Fxq " * * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
+if ! grep -Fxq "* * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" mycron ; then
         echo "Add service runner cron entry" 
         echo "* * * * * /home/pi/emonpi/service-runner >> /var/log/service-runner.log 2>&1" >> mycron  #echo new cron into cronfile
         crontab mycron #install new cron file