Fix the server error when the ban reason is undefined. (#346)
Fix the server error when the ban reason is undefined. (#346)

Apparently, node-pg only translates JS `null` values to SQL `NULL`.
ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery,ShieldBattery/ShieldBattery