Removed a stray TODO about a constant in comctl_windows.go.
Removed a stray TODO about a constant in comctl_windows.go.

UIKit0/ui,292388900/ui,UIKit0/ui,UIKit0/ui,cainiaocome/ui,292388900/ui,beni55/ui,janstk/ui,cainiaocome/ui,robbiev/ui,292388900/ui,janstk/ui,beni55/ui,janstk/ui,robbiev/ui,ProtonMail/ui,ProtonMail/ui,ProtonMail/ui,mirrr/ui,HunterChen/ui,robbiev/ui,HunterChen/ui,HunterChen/ui,beni55/ui,hajimehoshi/ui,hajimehoshi/ui,mirrr/ui,mirrr/ui,cainiaocome/ui,hajimehoshi/ui