Additional check in zen_run_normal()

[swguy]

Suggestion: Change includes/functions/functions_lookups.php zen_run_normal() from

case (strstr(EXCLUDE_ADMIN_IP_FOR_MAINTENANCE, $_SERVER['REMOTE_ADDR'])):

to

case (!empty(EXCLUDE_ADMIN_IP_FOR_MAINTENANCE) && strstr(EXCLUDE_ADMIN_IP_FOR_MAINTENANCE, $_SERVER['REMOTE_ADDR'])):


Prevents log:
[31-Mar-2015 09:01:33 America/Los_Angeles] PHP Warning: strstr(): Empty delimiter in /home/customer/public_html/includes/functions/functions_lookups.php on line 715

[lat9]

The log actually comes because the $_SERVER['REMOTE_ADDR'] (the needle) is empty, so the check/correction should read:

case (!empty($_SERVER['REMOTE_ADDR']) && strstr(EXCLUDE_ADMIN_IP_FOR_MAINTENANCE, $_SERVER['REMOTE_ADDR']));

There were a couple of other cases where the $_SERVER['REMOTE_ADDR'] variable is checked in this manner, creating similar log entries if the value is empty. I'm pretty sure that DrByte had posted a solution somewhere (??) whereby the change for v1.6.0 is to check early on in the initialization and set the variable so that it's never empty.