Passing null to parameter #1 ($string) of type string is deprecated in template_preprocess_emaillog()

The fix looks good, thanks!

The link parameter in watchdog function is optional, see: https://api.drupal.org/api/drupal/includes%21bootstrap.inc/function/watc... and if it is not passed, NULL will be used instead. The NULL value is then passed to:
emaillog_watchdog()
drupal_mail()
emaillog_mail()
and finally ends up in $params array here: theme('emaillog', array('log' => $params));

Need to say the same cast is in core: https://api.drupal.org/api/drupal/modules%21syslog%21syslog.module/funct...

Committed and pushed this, thanks!

Automatically closed - issue fixed for 2 weeks with no activity.