[ptp] Fix unknown ranking value.
[ptp] Fix unknown ranking value.

DarKnight--/owtf,DarKnight24/owtf,DarKnight--/owtf,sharad1126/owtf,DarKnight24/owtf,DarKnight--/owtf,sharad1126/owtf,owtf/owtf,owtf/owtf,sharad1126/owtf,owtf/owtf,owtf/owtf,DarKnight24/owtf,DePierre/owtf,owtf/owtf,DePierre/owtf,DePierre/owtf,DarKnight--/owtf,DarKnight24/owtf,DePierre/owtf,sharad1126/owtf