Made sure sysData.selectedIndices() returns an empty slice if nothing was selected in a single-selection listbox.
Made sure sysData.selectedIndices() returns an empty slice if nothing was selected in a single-selection listbox.

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