diag_ping.php input validation fix. Issue #10537
diag_ping.php input validation fix. Issue #10537

dennypage/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,pfsense/pfsense,NewEraCracker/pfsense,dennypage/pfsense,pfsense/pfsense,pfsense/pfsense,phil-davis/pfsense,pfsense/pfsense,phil-davis/pfsense,phil-davis/pfsense