Temporary fix for https://wordpress.org/support/topic/cron-job-on-multisite-creates-error-log-entry/

cron_cleanup_fix.patch

diff --git a/classes/wp-security-utility.php b/classes/wp-security-utility.php
index e1c53dc..4f203ef 100644
--- a/classes/wp-security-utility.php
+++ b/classes/wp-security-utility.php
@@ -534,7 +534,9 @@ class AIOWPSecurity_Utility {
 			$current_unix_time = current_time('timestamp', true);
 			$previous_hour = $current_unix_time - 3600;
 			AIOWPSecurity_Utility::is_multisite_install() ? $tbl = $wpdb->sitemeta : $tbl = $wpdb->prefix . 'options';
-			$query = $wpdb->prepare("SELECT * FROM {$tbl} WHERE option_name LIKE 'aiowps_captcha_string_info_time_%' AND option_value < %s", $previous_hour);
+			AIOWPSecurity_Utility::is_multisite_install() ? $name_col = 'meta_key' : $name_col = 'option_name';
+			AIOWPSecurity_Utility::is_multisite_install() ? $val_col = 'meta_value' : $val_col = 'option_value';
+			$query = $wpdb->prepare("SELECT * FROM {$tbl} WHERE {$name_col} LIKE 'aiowps_captcha_string_info_time_%' AND {$val_col} < %s", $previous_hour);
 			$res = $wpdb->get_results($query, ARRAY_A);
 			if (!empty($res)) {
 				foreach ($res as $item) {